Errata

Note from the Author or Editor:
The 4th paragraph of text on the MOMO on page 18 starts with:

Could you draw up the plans and send them to factory

This should read

Could you draw up the plans and send them to the factory

... reflects the uncertainly in the ...

Should be
... reflects the uncertainty in the ...

Note from the Author or Editor:
The person who submitted it has described it exactly.

A superscript has been missed.
6.87 x 1010 should be 6.87 x 10^10

Note from the Author or Editor:
For clarification where it says 1010 at the end of the second-last line in the middle column, the second 10 should be superscripted, like the occurrence earlier on the line.

Superscript missed.
6 x 10 - 5 should be 6 x 10^-5

Note from the Author or Editor:
In the thought bubble, there is the text

10 - 5

The spaces in between the 10 the - and the 5 need to be deleted
The the -5 needs to be superscripted, as it is in the top line of the paragraph below the though bubble.

NB: This error was introduced in production/final editing when the style of the conversations was changed by someone at O'Reilly. The text in the thought bubble was originally in a paragraph and was correct int he InDesign file I submitted. It's probably worth the while of someone at O'Reilly doing a search for minus signs that appear in the ComicSans MS font to see if this has happened anywhere else.

0.000001 is the same as ?

Should be 0.00001 is the same as ? to fit with the answers on the next page and to avoid using 10^-6 as an answer twice.

Note from the Author or Editor:
The person who submitted this has described it clearly. One of the zeros in the number 0.000001 needs to be removed to make it 0.00001

(Introduced by me when fixing something else post tech review - sorry.)

"Sharpen your pencil" is wrong.
It must be replaced ==> EXERCISE.
... and the picture, too.

Note from the Author or Editor:
The 'Sharpen your pencil Solution' graphic at the top left of page 182 should be replaced with an 'Exercise solution' graphic. The layout may need a small tweak to fit everything in, as the 'Exercise solution' graphic is taller but narrower than the 'Sharpen your pencil solution' graphic.

... its easy to use a ruler ...

should be

... it's easy to use a ruler ...

Note from the Author or Editor:
There needs to be an apostrophe where the person who submitted this says.

If something has a constant velocity...

should be

If something has a constant acceleration...

Note from the Author or Editor:
The person who submitted the error is correct and has described it clearly.

(Legacy of me copying across a different post-it then forgetting to change a word - sorry.)

You can tell that v and v0 are both displacement ~~ => not displacement but velocity.

Note from the Author or Editor:
The large annotation on the right hand side of the page says:

... are both displacements because they use the letter v.

It should say:

... are both velocities because they use the letter v.

"However, as displacement is the rate of change of velocity..."

Should be:
"However, as velocity is the rate of change of displacement..."

Note from the Author or Editor:
In the first line of the second paragraph in the block of text at the bottom of the page, it says:
"However, as displacement is rate of change of velocity"

This should read
"However, as velocity is rate of change of displacement"

In Sharpen your pencil, I think the word "Solution" is missing

Note from the Author or Editor:
The 'Sharpen your pencil' graphic at the top of the page should be a 'Sharpen your pencil - Solution' graphic.

... but with some of the variable equal to zero ...

should be

... but with some of the variables equal to zero ...

Note from the Author or Editor:
Description is clear and correct.

... but with some of the variable equal to zero ...

should be

... but with some of the variables equal to zero ...

Note from the Author or Editor:
Description is clear and correct.

The time in the question is given to 2 sd. In the solution on the next page it has 3 sd.

Note from the Author or Editor:
Sharpen your pencil: Question, 1st line

1.5

should be

1.50

In a similar way to your forehand. you can also ...

should be

In a similar way to your forehand, you can also ...

Note from the Author or Editor:
Description is clear and correct.

The image of the cage in the graphic is garbled.

Note from the Author or Editor:
Agreed - this appears to have happened to a few images in the book (not drawn by the author). Possibly something going wrong with transparency somewhere?

"Vectors are vectors ..."

Did you mean to say that?

(And what's the guy in the picture holding?!)

Note from the Author or Editor:
Para 1, sentence 1 begins:

Vectors are vectors, so as long as you are consistent

This should be shortened to

As long as you are consistent


The rest of the sentence and paragraph remains the same.

(Looking back through the earlier drafts, this was a bit of over-zealous editing that I missed when it got passed back to me!)

"Your launch velocity of 5.0 m/s is a definitely right!"
But I think that launch velocity is not 5.0 m/s but 9.8 m/s.

Note from the Author or Editor:
In the heading at the bottom right of page 303, the number 5.0 should be changed to read 9.8 (the same as the number in the picture).

(Originally requested pre-publication but it slipped through.)

... rocket-powered sled ...

should be

... rocket-powered hovercraft ...

?

Note from the Author or Editor:
Yes - this is correct and clearly described.

(due to a scenario change where one occurrence of the sled which became a hovercraft got missed... originally the Emu was sending a postcard from Antarctica.)

As well as a stopping distance to pass onto the Dingo...

sounds like you are putting the stopping distance on the Dingo's head. Should it be

As well as a stopping distance to pass on to the Dingo...

i.e. you will pass on the stopping distance to the Dingo?

Note from the Author or Editor:
1st paragraph after main title, 11st sentence:

As well as a stopping distance to pass onto the Dingo, you now know

should read

You worked out a stopping distance for the Dingo - and now know

Second sentence should have capital I:

... just worked out. It's sometimes called ...

Note from the Author or Editor:
Description is clear and correct.

... the Dingo doesn't know what what his launch ...

should be

... the Dingo doesn't know what his launch ...

Note from the Author or Editor:
Description is clear and correct.

Additionally, the word 'Grand' should be removed from the heading at the top of page 321.

Shouldn't the arrow for acceleration should be double headed

Note from the Author or Editor:
In the sketch on the left hand side of the 'Sharpen your pencil solution' there is an arrow on the far left pointing downwards with a = -9.8 m/s2 next to it

This arrow should be double-headed (like the arrows on p182 which have the word 'Acceleration' next to them).

Dawr a little square...

should be

Draw a little square...

Note from the Author or Editor:
Description is clear and correct.

(Also in solution on page 346)

Lengths are given to 4sd in the question text. Should be 3sd to be consistent with previous examples and with working and annotations on page 346.

Note from the Author or Editor:
Sharpen your pencil, numbers in question

15.00 should be 15.0

25.00 should be 25.0

15.00 should be 15.0

25.00 shoudl be 25.0

The hypotenuse it labelled 'hypotenuse.'

should be

The hypotenuse is labelled 'hypotenuse.'

Note from the Author or Editor:
Description is clear and correct.

The annotation overlays the 'you are here' footer text.

Note from the Author or Editor:
Bottom right of page - the annotation overlays the 'you are here' footer text.

To fix, it's probably best to pull the left boundary of the annotation box out to the left, until the annotation is three lines instead of four. Then shift the annotation box to the right or left to get it to line up with the tail of the annotation arrow.

... inwhich ...

should be

... in which ...

Note from the Author or Editor:
The 4th line of the sidebar at the bottom right of the page is missing a space in the phrase 'in which'.

Mismatched speech marks on "K'ontext.

Same in solution on page 366

Note from the Author or Editor:
Description is clear.

Both speech marks should be single quotes.

... if the cannonball doesn't deviate from its part all that much.

should be

... if the cannonball doesn't deviate from its path all that much.

(although can it deviate from its own path at all?)

Note from the Author or Editor:
Final paragraph contains the phrase:

if the cannonball doesn't deviate from its part all that much. To work out if the angle's OK

This should read

if the cannonball doesn't deviate a lot from where you aimed it. To work out if things are OK

The horizontal component ...

should be

The horizontal components ...

Note from the Author or Editor:
Description is clear and correct.

(Make sure the 's' is in bold when added to the cord 'component'.)

In the diagram and in the last fraction

ajd should be adj

Note from the Author or Editor:
Description is clear and correct.

('adj' is short for 'adjacent' so 'ajd' is a typo)

... the stone cannonball is only a third of the mass ...

should be

... the stone cannonball is only a quarter of the mass ...

to fit with inset graphic and future calculations.

Note from the Author or Editor:
The description is clear and correct.

... further then the iron one ...

should be

... further than the iron one

Note from the Author or Editor:
Description is clear and correct.

... it's a third of the mass ...

should be

... it's a quarter of the mass ...

... velocity for a stone cannonballs ...

should be

... velocity for a stone cannonball ...

Note from the Author or Editor:
Description is clear and correct.

... changing and measuring the vehicles masses ...

should be

... changing and measuring the vehicles' masses ...

Note from the Author or Editor:
Paragraph is the first one on the right hand side of the page, typo is in 1st line.

Description is clear and correct.

Note to editor: adding the apostrophe may slip vehicles' onto the next line; so the textbox may need to be enlarged slightly.

... conseervation ...

should be

... conservation ...

Note from the Author or Editor:
Description is clear and correct.

Repeated comma after m(sub)i

Note from the Author or Editor:
Right hand annotation:

,,

should be

,

... the cannonballs' range if you know its velocity ...

should be

... the cannonball's range if you know its velocity ...

or

... the cannonballs' range if you know their velocity ...

Note from the Author or Editor:
3rd para on page (1st under the heading "... but you want the new range!"

2nd line, 1st word

cannonballs'

should be

cannonball's

... the horizontal component of the iron cannonballs' velocity.

should be

... the horizontal component of the iron cannonball's velocity.

Note from the Author or Editor:
2nd paragraph under the heading 'You solved the pirates' problem!'

2nd line ends with:

cannonballs'

this should read:

cannonball's

... in physics we need use these words more carefully.

should be

... in physics we need to use these words more carefully.

Note from the Author or Editor:
Clear description already given.

F(sub)net = ma its the most ...

should be

f(sub)net = ma is the most ...

Note from the Author or Editor:
Description is slightly incorrect, as the F needs to remain capitalised. The change that actually needs to be made:

its the most useful form

should be

is the most useful form

... the perpendicular force you are exert on it ...

should be

... the perpendicular force you exert on it ...

Note from the Author or Editor:
Paragraph at the bottom of the page, 2nd line

... the perpendicular force you are exert on it ...

should be

... the perpendicular force you exert on it ...

Fnet should be F(sub)net

Note from the Author or Editor:
Right hand column, 1st para.

The equation at the end of the 3rd line reads:

Fnet = ma

'net' should be subscript

'F' should be bold

'a' should be bold

'm' should be italic

"Perpendicular component" is in bold apart from the t.

Note from the Author or Editor:
2nd line of 1st paragraph.

The whole of the word 'component' should be in bold.

The calculation of cos(22.4) = a/h = P(sub)2u/d / 365
should be: P(sub)2l/r / 365

Note from the Author or Editor:
Part b of the 'Sharpen your pencil solution', next to the lower triangle, there is an equation that begins cos(22.4).

In the top line of that equation, in the rightmost term, it says p2u/d where the '2u/d' is subscripted.

Instead, the subscript should read '2l/r' like the subscript at the beginning of the line below.

Does the sentence make sense?

"If no other horizontal forces are present, and therefore no friction if there are no other horizontal forces."

Note from the Author or Editor:
For greater clarity, the paragraphs at the bottom right beginning "If the object is stationary..." and "If you start to gently push..." should be completely replaced by the following two paragraphs:

If an object is stationary, its velocity is constant (and zero!). Constant velocity means that no net force acts on the object. If there are no horizontal forces acting on the object, the frictional force acting on the object must also be zero.

If you start to gently push a stationary object, it won't move, as friction always opposes motion. But if you keep on pushing harder, you'll eventually manage to exert a larger horizontal force than the maximum possible frictional force, and the object will move.

Note to editor: this increases the length of the 1st para in the textbox by a line; need to pull the bottom of the textbox down to accommodate the final line of text.

... force actually is is in real life.

should be

... force actually is in real life.

Note from the Author or Editor:
Description is clear and correct.

In the third line of section d. the variable F(sub)fric is mentioned.

This should be changed to F(sub)r with the same formatting (bold and subscript) as the variable that is already there.

Note from the Author or Editor:
In the third line of section d. the variable F(sub)fric is mentioned.

This should be changed to F(sub)r with the same formatting (bold and subscript) as the variable that is already there.

n the third line of the question in section d. the variable F(sub)fric is mentioned.

This should be changed to F(sub)r with the same formatting (bold and subscript) as the variable that is already there.

Note from the Author or Editor:
In the third line of the question in section d. the variable F(sub)fric is mentioned.

This should be changed to F(sub)r with the same formatting (bold and subscript) as the variable that is already there.

Should

Friction force F(sub)f

be

Friction force F(sub)fric

?

Note from the Author or Editor:
Labelled diagram which is the answer to part a. (top left).

The arrow pointing left has a label under it:

Friction
force Ff

where the 'f' in Ff is subscript

The label should be changed to:

Friction
force Ffric

where the 'fric' in Ffric is subscript.

(It may be necessary to increase the size of the textbox to do this.)

... so that the net force in the direction is zero ...

should be

... so that the net force in that direction is zero ...

Note from the Author or Editor:
Description is clear and correct.

"Look back at pages $$-$$..."

Replace "$$-$$" with a page number.

Same error on page 504

Note from the Author or Editor:
On page 503 in the 3rd para of the 'Sharpen your pencil', it says:
pages $$-$$ of chapter 10

This should instead read:
pages 397-398 of chapter 10


On page 504 in the 3rd para of the 'Sharpen your pencil solution', it says:
pages $$-$$ of chapter 10

This should instead read:
pages 397-398 of chapter 10

($$ was used as a placeholder string for page numbers before the chapters of the book were stitched together. Unfortunately, these occurrences weren't replaced.)

... the players weight less.

should be

... the players weigh less.

Note from the Author or Editor:
In section e. of the sharpen

... the players weight less.

should be

... the players weigh less.

... the players weight less.

should be

... the players weigh less.

Note from the Author or Editor:
In section e. of the sharpen solution:

... the players weight less.

should be

... the players weigh less.

You can change only direction horizontally ...

should be

You can only change direction horizontally ...

Note from the Author or Editor:
Description is clear and correct.

"The rules say only one attempt per lifetime!"

But the rules on page 516 say

"Only two attempts per person in a lifetime."

Note from the Author or Editor:
Page 521, 2nd para, 2nd line

one attempt

should be

two attempts

Should the annotation be pointing to the sketch above the Sharpen your pencil box?

Note from the Author or Editor:
The bottom-left annotation needs a new arrow, pointing from it to the sketch immediately above the 'Sharpen your Pencil' box.

(There should be room for the arrow to fit behind the smaller arrow that is already attached to the annotation, up and over the end of the pencil, then right.)

Answer is given to 2 sd but says 3 sd in brackets.

Note from the Author or Editor:
Bottom right of page, handwritten answer to part d, final line

(3 sd)

should be

(2 sd)

The distance 0.10 m is shown sometimes as 0.10 and sometimes as 0.100

Note from the Author or Editor:
2nd para, 1st line:

0.10 m (10 cm)
should be
0.100 m (10.0 cm)


Looking down the left hand side of the page, the 2nd annotation:

The 150 kg of stacking stones need to go down by 1.00 m to lift the sword and stone 0.10 m
Should be
The 150 kg of stackable stones need to go down by 1.00 m to lift the sword and stone 0.100 m

At the bottom right of each diagram

0.10 m
should be
0.100 m

(Note to editor: may need to increase the sizes of some of the textboxes to avoid the text from flowing out.)

... parallel to other force ...

should be

... parallel to the other force ...

Note from the Author or Editor:
Description is clear and correct.

(Paragraph is 4th on page and 2nd one under the heading that beings "The work you need to do a job".)

The work you do on the object is defined as the he parallel ...

should be

The work you do on the object is defined as the parallel ...

Note from the Author or Editor:
Description is clear and correct.

Inconsistent precision for distances. Some 0.10m and some 0.100m

Note from the Author or Editor:
Both versions of the pictures, at the bottom right of each picture

0.10 m

should be

0.100 m

(Text boxes may need to be enlarged to fit in the extra digit.)

In the question (1st line):

0.10

should be

0.100


In the hand-written solution (2nd line of solution to part a.)

0.10

should be

0.100

... is a bit like like jiggling ...

should be

... is a bit like jiggling ...

Note from the Author or Editor:
Description given is clear and correct.

Last line:

the the first and second checkpoints?

should be

the first and second checkpoints?

appendix $ needs to be specified.

Note from the Author or Editor:
Just before question b. there is a block of text that ends with the words:

look them up in appendix $.

This should be

look them up in appendix ii.

appendix $ needs to be specified.

Note from the Author or Editor:
Just before question b. there is a block of text that ends with the words:

look them up in appendix $.

This should be

look them up in appendix ii.

K = 1/2mv2 needs a superscript.

Note from the Author or Editor:
1st para under the heading "Doing work against friction increases the internal energy", last line

The line ends with an equation, which is completely unformatted. The easiest way to fix this is to copy the same equation from another place: the beginning of the third line in the second-last paragraph on page 570, where the italic, bold and superscript formatting are all correct.

... the minimum time it would take a 10.0 kW engine time to lift ...

should be

... the minimum time it would take a 10.0 kW engine to lift ...

Note from the Author or Editor:
Description is clear and correct.

... the minimum time it would take a 10.0 kW engine time to lift ...

should be

... the minimum time it would take a 10.0 kW engine to lift ...

Note from the Author or Editor:
Description is clear and correct.

2nd sentence should start with a capital.

Note from the Author or Editor:
Bottom thought bubble, second line

if the question

should read

If the question

if the change ...

should be

If the change ...

Note from the Author or Editor:
Description is clear and correct.

It's a bird... it's plane...

should be

It's a bird... it's a plane...

(unless it's a joke!)

Note from the Author or Editor:
Description is clear and correct.

(Not a joke, though cheese references in a later chapter are all deliberate.)

The subscript for a, the acceleration, is before it. It should be after it.

Note from the Author or Editor:
Hand-written solution, right hand side, second line, last thing in line.

The letters after the half should be, in order:

avt2

with the v subscript and the 2 superscript.

All we need to do it to put ...

should be

All we need to do is to put ...

Note from the Author or Editor:
Description is clear and correct.

In the final answer: a = 4.54 m/s (3
should be: a = 4.54 m/3 (3 sd)

Note from the Author or Editor:
In the answer to part b of the sharpen, the final line reads:
a = 4.53 m/s (3

This should read
a = 4.54 m/s2 (3sd)
with a superscripted 2

(It looks like the sd) has run out of the textbox, but the superscipt 2 still needs to be added once the textbox has been extended.)

This is larger then the ...

should be

This is larger than the ...

Note from the Author or Editor:
This is correctly and clearly described.

The Answer that begins,

Note from the Author or Editor:
The third answer in the left hand column of the 'no dumb questions' element starts with the text:

Yes, that's be fine

This should instead read:

Yes, that's fine.

Here, we're written v ...

should be

Here, we've written v ...

Note from the Author or Editor:
Description given is correct. Position of annotation is left of page, nearly halfway down.

Note from the Author or Editor:
The second last answer in the no dumb questions element reads:

Great spot! You'll be learning all about that in chapter 16.

This should instead read:

Great spot! You'll be learning all about that in chapter 18.


(The error was made as a result of a couple of earlier chapters splitting into two.)

Isn't acceleration is usually a vector?

should be

Isn't acceleration usually a vector?

and

... a scalar equation gives the ...

should be

... a scalar equation that gives the ...

Note from the Author or Editor:
Isn't acceleration is usually a vector?

should be

Isn't acceleration usually a vector?

And

a scalar equation gives the

should be

a scalar equation giving the

... he travel AT if he'd been in (i) 10.0m radius module and (ii) the 100m radius modules?

should be

... he travel at if he'd been in (i) the 10.0m radius module and (ii) the 100m radius module?

Note from the Author or Editor:
Description is clear and correct.

... he travel AT if he'd been in (i) 10.0m radius module and (ii) the 100m radius modules?

should be

... he travel at if he'd been in (i) the 10.0m radius module and (ii) the 100m radius module?

Note from the Author or Editor:
Description is clear and correct.

In terms of the circle's radius:

In terms of r:

should be

In terms of the circle's radius, r:

(and that's a funny rectangle!)

Note from the Author or Editor:
In the 'sharpen your pencil', the final sentence before the a. b. c. part says:

In terms of the circle's radius:

In terms of r:


These two statements need to be put together to make one sentence:

In terms of the circle's radius, r:
(where the r is in italics)


Note to editor: In terms of layout, this 'gains' a couple of lines that can be used to give the learner more space to work out their answer below the question. Pulling the text box frame to the right so that the third line starts with 'a rectangle' and ends with 'radius, r:' looks like the best way of doing this.

In the 'sharpen your pencil solution', the final sentence in question 1, at the top of the page, before the a. b. c. part says:

In terms of the circle's radius:

In terms of r:


These two statements need to be put together to make one sentence:

In terms of the circle's radius, r:
(where the r is in italics)


Note to editor: In terms of layout, this 'gains' a couple of lines that can be used to give the learner more space to work out their answer below the question. Pulling the text box frame to the right so that the third line starts with 'a rectangle' and ends with 'radius, r:' looks like the best way of doing this.

Last sentence:

... a circle with radius t.

should be

... a circle with radius r.

Note from the Author or Editor:
Final sentence of 3rd answer (which is about halfway down the middle column).

a circle with radius t.

should be

a circle with radius r.
(with the r in italics)

... when it enters bottom of the loop ...

should be

... when it enters the bottom of the loop ...

Note from the Author or Editor:
Description is clear and correct.

... when it enters bottom of the loop ...

should be

... when it enters the bottom of the loop ...

Note from the Author or Editor:
Description is clear and correct.

... atthe start of the track.

should be

... at the start of the track.

Note from the Author or Editor:
Grey skippy sharp annotation 3/4 of the way down on left hand side, 3rd line, first words

atthe

should be

at the

... a bunch of little spikes s

should be

... a bunch of little spikes.

Note from the Author or Editor:
Description is correct and clear. It's the sentence above the picture of the circle with spikes.

Thereforce r^2 must be ...

should be

Therefore r^2 must be ...

Note from the Author or Editor:
3rd line of section b. answer.

Description is clear and correct.


(I must have typed 'force' so many times by that point that my fingers were on autopilot!)

"The same amount of light it..."
should be
"The same amount of light is..."

Note from the Author or Editor:
In the third para in the block of text on the left hand side of p730, it says:
"The same amount of light it spread out"

This should read
"The same amount of light is spread out"

... interested in the distance, buit sometimes ...

should be

... interested in the distance, but sometimes ...

Note from the Author or Editor:
Bottom right annotation 4th line

buit

should be

but

Says look back at page 718

722?

Note from the Author or Editor:
Page reference in the annotation on the left should be 722 (not 718).

The 4ht line of the text

"r(sub)2 than it is at...
should be
"r(sub)3 than it is at..."

Note from the Author or Editor:
To the bottom right of the picture of the earth, there's a four line block of Skippy Sharp font text.

The 4th (and final) line of that text block begins
r2
where the 2 is subscripted

Instead it should begin
r3
where the 3 is subscripted.

Thje length of r(sub)2 ...

should be

The length of r(sub)2 ...

Note from the Author or Editor:
The annotation is the one to the left of the globe picture.

Description is clear and correct.

Use of m(sub)1 and m(sub)2 is not consistent

In the equation:
m(sub)1 = 5.97x10^24 kg

should't it be
m(sub)2 = 5.97x10^24 kg

Also, just below the small circle
the eqn:
m(sub)2
should be
m(sub)1

Note from the Author or Editor:
In the Sharpen your pencil solution, part a, there is a picture to the right which is annotated
m1 = 5.97 ? 1024 kg (the 1 of m1 is subscript, the 24 is superscript)
m2 = ? (the 2 is subscript)

The subscripts 1 and 2 are the wrong way round - the annotations should read:
m2 = 5.97 ? 1024 kg (the 2 of m2 is subscript, the 24 is superscript)
m1 = ? (the 1 is subscript)

(The textboxes stay in exactly the same place, only the subscripts get swapped.)

... your velocity would be it you fell ...

should be

... your velocity would be if you fell ...

Note from the Author or Editor:
Description is clear and correct.

In the 5th line of the paragraph starting with "It's OK if you..." are the words " calculated on page $$..."
Should the two dollar signs have been a page number?

Note from the Author or Editor:
Second Skippy Sharp font annotation on right of page, 5th line down.

Currently reads
calculated on page $$, but

Should read
calculated on page 744, but

4.37 x 10^4 m/s = 44.7 km/s

should be

4.37 x 10^4 m/s = 43.7 km/s

Note from the Author or Editor:
Description is clear and correct (the final 44.7 should be a 43.7).

In the 3rd line of the text "saatellite's" should be "satellites"

Note from the Author or Editor:
Skippy sharp not on left of page

saatellite's

should be

satellite's

(original description of error not quite correct as apostrophe should be retained)

Should the geostationary orbits be 40000 km above the earth rather than 4000Km?

Note from the Author or Editor:
Bottom section, below Markerfelt font heading, 1st para 2nd line

There's a value that reads
4000 km

This should read
40000 km

The cube root symbol is missing.

Note from the Author or Editor:
1st question in left hand column

What was that thing all about

(with extra spaces between 'that' and 'thing')
There should be a cube root symbol instead of one of these spaces.

Note to editor: the cube root symbol was originally in a different font but has been rendered as a space on this page. It may be worth searching the entire book for cube root symbols to see if this has happened anywhere else.

The cube root symbol is missing for r = (cube root)something

Note from the Author or Editor:
3rd question in left hand column

In the 2nd line of the question it says

r = something
(with extra spaces between the = and the something) There should be a cube root symbol instead of one of these spaces.

Note to editor: the cube root symbol was originally in a different font but has been rendered as a space on this page. It may be worth searching the entire book for cube root symbols to see if this has happened anywhere else.

And the astronaut it good to go.

should be

And the astronaut is good to go.

Note from the Author or Editor:
Under the bottom right heading, 2nd para

And the astronaut it good to go.

should be

And the astronaut is good to go.

The player viewing the duck from a side view.

should be

The player's viewing the duck from a side view.

Note from the Author or Editor:
Description is correct and clear.

This is our graph from page 768.

should be

This is our graph from page 772.

Note from the Author or Editor:
Description is clear and correct.

last line:

... some into it somewhere.

should be

... come into it somewhere.

Note from the Author or Editor:
Description is correct and clear.

Should

... we worked out the equation for r earlier ...

be

... we worked out the equation for v earlier ...

?

Note from the Author or Editor:
Description is clear and correct

Second line of text block
... the spring exerts in in ...
should be
... the spring exerts is in ...

Note from the Author or Editor:
Skippy sharp text on middle right of page, above the Sharpen bos.

exerts in in the

should be

exerts is in the

In the answer of part c, 3rd line, first word:

"Onvce" should be "Once"

Note from the Author or Editor:
Submitted description is clear and correct.

Bottom graph, right side comment, second line:
"dislacement should be "displacement"

Note from the Author or Editor:
Black skippy sharp text to right of lower diagram

Acceleration at maximum when dislacement is at maximum

should be

Acceleration at maximum when displacement is at maximum

Text is:
"Hint: Look back at page 807 for the equation for the force of a spring"

I'm not sure page 807 has the Hook's Law equation. Suggest the reference be page 801. That page has the equation in big print with an explanation.

Note from the Author or Editor:
Skippy sharp note overlapping left of sharpen box:

807

should be

801

In the Sharpen your pencil solution
Part c
The final value for the net Force should be -0.0878N rather than -0.878N.

Part d
The final value for the net Force should be -0.0888N rather than -0.888N.

Note from the Author or Editor:
The explanation is clear.

To fit in the extra zeros, the textboxes for the answers may need to be extended. The Arrows pointing to each answer will need to be shortened slightly so that they don't overlap with the new answers.

"Thuis" should be "This"

Note from the Author or Editor:
1st para under the picture:

Thuis means

should be

This means