RCHS Physics Exam 2 Review Questions & Answers 2024/2025
which has the greater momentum when moving?
a) a bullet
b) a container ship
c) either of these depending on speed - ANSWERSc) either of these depending on speed
The speed of a 4-kg ball with a momentum of 12 kg m/s
a) 48 m/s.
b) ...
c) either of these depending on speed - ANSWERSc) either of these depending on speed
The speed of a 4-kg ball with a momentum of 12 kg m/s
a) 48 m/s.
b) 12 m/s.
c) 3 m/s.
d) 4 m/s. - ANSWERSc) 3 m/s.
A car traveling along the highway brakes to a stop over a certain distance. More braking force is required
if the car has...
a) more momentum
b) more mass
c) less stopping distance
d) all of the above - ANSWERSD) all of the above
Compared with falling on a stone floor, a wine glass may not break when it falls on a carpeted floor
because the...
a) carpeted floor provides a smaller impulse
b) stopping time is longer on the carpet
c) carpet provides a smaller impulse and a longer time - ANSWERSb) stopping time is longer on the
carpet
, When you jump from an elevated position you usually bend your knees upon reaching the ground, which
makes the time of the contact about 10 times that of a stiff-legged landing. In this way the average force
your body experiences is... - ANSWERSc) about 1/10 as great
Whether a truck comes to a stop by crashing into a haystack or a brick wall, the impulse is... -
ANSWERSb) both the same
As Bronco Brown steps off a hovering high-flying helicopter and falls through the air, he experiences...
a) an increasing speed
b) an impulse
c) a decreasing acceleration
d) all of the above - ANSWERSd) all of the above
A piece of putty moving with 1 unit of momentum strikes and sticks to a heavy bowling ball that is
initially at rest. Both move with a combined momentum of... - ANSWERSa) 1 unit
The change in momentum that occurs when a 1.0 kg ball traveling at 4.0 m/s strikes a wall and bounces
bat at 2.0 m/s is... - ANSWERSb) 6 kg m/s
When Freddy Frog drops vertically from a tree onto a horizontally-moving skateboard, the speed of the
skateboard... - ANSWERSa) decreases
Freddy Frog drops vertically from a tree onto a horizontally-moving skateboard. The reason he doesn't
slip off the skateboard is due to... - ANSWERSb) friction between his feet and the board
A 1-kg chunk of putty moving at 1 m/s collides with and sticks to a 5-kg bowling ball initially at rest. The
bowling ball and putty then move with a momentum of... - ANSWERSb) 1 kg m/s
A 5000-kg freight car moving at 2 m/s collides with a 10,000-kg freight car at rest. They couple upon
collision and move away at... - ANSWERSc) 2/3 m/s
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