College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A 2 kg object traveling at 5 m/s to the right collides with and sticks to a 3kg object initially at rest. Which of the following correctly describes the change in the total kinetic energy and the speed of the objects after the collision? (Hint: Make a table!)
A.The kinetic energy decreases and the final speed is 3.2 m/s.
B.The kinetic energy increases and the final speed is 3.2 m/s
.C.The kinetic energy decreases and the final speed is 2 m/s.
D.The kinetic energy increases and the final speed is 2 m/s.
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Step 1: Kinetic Energy discussion
Because objects stick together after collision so collision is perfectly inelastic collision in which kinetic energy decreases so final kinetic energy will be less than initial kinetic energy
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