AP Physics B Practice Exam

Category - Introductory Physics

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Two students are standing next to each other on a level field. One of the students throws a table tennis ball forward toward a line 2.0 m away. At the same time, the second student throws a bowling ball in the same direction. Both balls take the same time to travel the 2.0 m.Only the second student feels a noticeable backward push when she throws her ball.Which of the following statements explains why only the second student feels a noticeable backward push?

The bowling ball exerts a much larger reaction force.
The bowling ball undergoes a much larger acceleration
The bowling ball requires more force to overcome gravity.
The bowling ball converts more inertia into kinetic energy

Explanation

Answer: A - The bowling ball exerts a much larger reaction force.

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