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8.5 Exercise 7

Avg difficulty 2.5

Mass A is initially moving with a velocity of 24 m/s in the +x-direction. Mass B is twice as massive as mass A and is initially at rest. The two objects experience a totally inelastic collision. What is the final speed of both objects after the collision?

  1. A is not moving; B is moving 24 m/s in the +x-direction.
  2. Neither A nor B is moving.
  3. A is moving 24 m/s in the –x-direction. B is not moving.
  4. Both A and B are moving together 8 m/s in the +x-direction.

OpenStax College Physics 2e, 8.5 Inelastic Collisions in One Dimension, exercise 7

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.