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Back to 8.3 Conservation of Momentum

8.3 Exercise 1

Avg difficulty 2.5

Which of the following is an example of an open system?

  1. Two air cars colliding on a track elastically.
  2. Two air cars colliding on a track and sticking together.
  3. A bullet being fired into a hanging wooden block and becoming embedded in the block, with the system then acting as a ballistic pendulum.
  4. A bullet being fired into a hillside and becoming buried in the earth.

OpenStax College Physics 2e, 8.3 Conservation of Momentum, 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.