COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 7, Problem 16QAP
To determine
The speed comparison of a large semitrailer truck and a small car having equal momentum.
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Students have asked these similar questions
2) A classical cartoon situation: Lobster, with mass m, on one edge of a carpet with length L and
mass M is suddenly starting to run at maximum speed Vmax along the carpet. Because there is
negligible friction between the carpet and the floor, the carpet slides out underneath Lobster,
and so it doesn't quite move as much as it wished.
a. Make a detailed schematic drawing of the situation.
b. How long until Lobster reaches the end of the carpet?
c. Watching it from a steady frame of reference, how fast and in which directions are the
carpet and Lobster moving, respectively?
d.
How far did Lobster progress in that steady frame of reference when it reaches the end of
the carpet?
e. If m = 1 kg, M = 3 kg, L = 20 m, Vmax = 0.25 m/s, how long until Lobster reaches the end of
the carpet, and how far has it moved in the steady frame of reference? How far has it
moved on the carpet?
A. If you catch the ball, with what speed do you and the ball move afterwards?
B. If the ball hits you and bounces off your chest so that afterward it is moving horizontally at 8.25 m/s in the opposite direction, what is your speed after the collision?
When comparing the momentum of two moving objects, which of the following is correct?
A
a. The object with the higher velocity will have less momentum if the masses are equal.
В
b. The more massive object will have less momentum if its velocity is greater.
c. The less massive object will have less momentum if the velocities are the same.
D
d. The more massive object will have less momentum if the velocities are the same.
E
E. No answer
Chapter 7 Solutions
COLLEGE PHYSICS
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