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AP Physics 1 / Introductory
Momentum
OS-AP-8-TP15 · OpenStax College Physics for AP Courses 2e
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Conservation of Momentum (Problem 15)
Which of the following is an example of an open system?
A
Two air cars colliding on a track elastically.
B
Two air cars colliding on a track and sticking together.
C
A bullet being fired into a hanging wooden block and becoming embedded in the block, with the system then acting as a ballistic pendulum.
D
A bullet being fired into a hillside and becoming buried in the earth.
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