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8.5 Exercise 9

Avg difficulty 2.5

Mass A is initially moving with a velocity of 2 m/s in the +x-direction. Mass B is initially moving with a velocity of 6 m/s in the –x-direction. The two objects have equal masses. After they collide, mass A moves with a speed of 4 m/s in the –x-direction. What is the final velocity of mass B after the collision?

  1. 6 m/s in the +x-direction
  2. 4 m/s in the +x-direction
  3. zero
  4. 4 m/s in the –x-direction

OpenStax College Physics 2e, 8.5 Inelastic Collisions in One Dimension, exercise 9

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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.