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Back to 8.4 Elastic Collisions in One Dimension

8.4 Exercise 11

Avg difficulty 2.5

Two objects (A and B) of equal mass collide elastically. Mass A is initially moving 5.0 m/s in the +x-direction prior to the collision. Mass B is initially moving 3.0 m/s in the –x-direction prior to the collision. After the collision, mass A will be moving with a velocity of 3.0 m/s in the –x-direction. What will be the velocity of mass B after the collision?

  1. 3.0 m/s in the +x-direction
  2. 5.0 m/s in the +x-direction
  3. 3.0 m/s in the –x-direction
  4. 5.0 m/s in the –x-direction

OpenStax College Physics 2e, 8.4 Elastic Collisions in One Dimension, exercise 11

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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.