College Physics: A Strategic Approach (4th Edition)
4th Edition
ISBN: 9780134609034
Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher: PEARSON
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Chapter 10, Problem 85GP
Two coupled boxcars are rolling along at 2.5 m/s when they collide with and couple to a third, stationary boxcar.
a. What is the final speed of the three coupled boxcars?
b. What fraction of the cars' initial kinetic energy is transformed into thermal energy?
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Two coupled boxcars are rolling along at 2.5 m/s when they collide with and couple to a third, stationary boxcar.a. What is the final speed of the three coupled boxcars?b. What fraction of the cars’ initial kinetic energy is transformed into thermal energy?
a. What is the angular velocity of the two after the collision?b. What is the kinetic energy before and after the collision?c. What is the total linear momentum before and after the collision?
On a frictionless table, a glob of clay of mass 0.240kg strikes a bar of mass 1.560kg perpendicularly at a point 0.390m from the center of the bar and sticks to it.
a. If the bar is 1.260m long and the clay is moving at 9.300m/s before striking the bar, what is the final speed of the center of mass?
b. At what angular speed does the bar/clay system rotate about its center of mass after the impact (in rad/s)?
Chapter 10 Solutions
College Physics: A Strategic Approach (4th Edition)
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