http://www.ck12.org Chapter 29. Answers to Selected Problems Version 2
1.∼ 10 −^8 N very small force- Your pencil does not accelerate toward you because the frictional force on your pencil is much greater
than this force. - (a) 4. 23 × 107 m (b) 6. 6 Re(d) The same, the radius is independent of mass
- 9 × 107 m
- You get two answers forr, one is outside of the two stars one is between them, that’s the one you want,
- 32 × 1010 m from the larger star.
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1.v=28 m/s
2.v−down,a−right - f−right
- Yes, 640N
Ch 7: Momentum Conservation
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8. 37.5 m/s
9.v 1 = 2 v 2
- 24kg− 5 m
- 0.364 m/s
- 22kg− 5 m
- 109 N
- 109 N due to Newton’s third law
- 2.0 kg,125 m/s
- 21 m/s to the left
- 3250 N
- 90 sec
- 7 × 105 sec
- 60 m/s
2..700 sec - yes, 8.16 m
- 0.13 m/s to the left
- 11000 N to the left
- tree experienced same average force of 11000 N but to the right
- 2500 lb.
- about 2.5 “g”s of acceleration
- no change
- the last two cars