AP Physics B Practice Exam - Question List

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146. A pitcher throws a 0.15 kg baseball at 40 m/s towards the catcher. What is the momentum of the baseball while moving at 40 m/s?
  1. 0.025 kg • m/s
  2. 3.8 kg • m/s
  3. 6.0 kg • m/s
  4. 270 kg • m/s
147. An astronaut drops a 1.0 kg object and a 5.0 kg object on the Moon. Both objects fall a total distance of 2.0 m vertically. Which of the following best describes the objects after they have fallen a distance of 1.0 m?
  1. They have each lost kinetic energy.
  2. They have each gained the same amount of potential energy.
  3. They have each lost the same amount of potential energy.
  4. They have each gained one-half of their maximum kinetic energy.
148.
Isaac Newton's law of inertia states that an object will continue in its state of rest or motion unless acted upon by an outside force. An object's inertia is directly related to its:
  1. Weight
  2. Momentum
  3. Mass
  4. Acceleration

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