ONLY FOR MISS HASHMI
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Chapter 6
3. Marshall pushes crates starting from rest across the floor of his classroom for 3 s with a net force as shown. For each crate, rank the following from greatest to least.
a. Impulse delivered
b. Change in momentum
c. Final speed
d. Momentum in 3 s
Chapter 7
48. When the velocity of an object is doubled, by what factor is its momentum changed? By what factor is its kinetic energy changed?
Chapter 8
40. Can an object move along a curved path if no force acts on it? Defend your answer.
Chapter 9
17. An astronaut lands on a planet that has the same mass as Earth but twice the diameter. How does the astronaut’s weight differ from that on Earth?
Chapter 10
7. Fragments of fireworks beautifully illuminate the night sky.
(a) What specific path is ideally traced by each fragment?
(b) What paths would the fragments trace in a gravity-free region?
20. When the space shuttle coasts in a circular orbit at constant speed about Earth, is it accelerating? If so, in what direction? If not, why not?
