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Back to 8.5 Inelastic Collisions in One Dimension

8.5 Exercise 1

Avg difficulty 2.5

Mass A (2.0 kg) has an initial velocity of 4 m/s in the +x-direction. Mass B (2.0 kg) has an initial velocity of 5 m/s in the –x-direction. If the two masses have an elastic collision, what will be the final velocities of the masses after the collision?

  1. Both will move 0.5 m/s in the –x-direction.
  2. Mass A will stop; mass B will move 9 m/s in the +x-direction.
  3. Mass B will stop; mass A will move 9 m/s in the –x-direction.
  4. Mass A will move 5 m/s in the –x-direction; mass B will move 4 m/s in the +x-direction.

OpenStax College Physics 2e, 8.5 Inelastic Collisions in One Dimension, exercise 1

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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.