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F = ma (Final Problems)
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FMA-2023-24 · 2023 F = ma (AAPT)

2023 F = ma Exam — Question 24

A very heavy plate continuously moves up and down with a small speed v, switching directions after each time t. At a random time, a ball is dropped from rest far above the plate, then bounces elastically off of it. How does the ball’s speed change during this collision?
Source: Question 24, 2023 F = ma Exam, © 2023 American Association of Physics Teachers (AAPT) and the U.S. Physics Team. Adapted by PhysicsTrainer: reformatted into a separate question and answer choices for online multiple-choice practice; any shared setup from nearby questions is repeated here. Not affiliated with or endorsed by AAPT or the U.S. Physics Team.