AP Physics B Practice Exam

Category - Introductory Physics

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?
  1. The bowling ball exerts a much larger reaction force.
  2. The bowling ball undergoes a much larger acceleration
  3. The bowling ball requires more force to overcome gravity.
  4. 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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