Practice Quiz

MCAS Physics Exam Practice - Question List

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81. Measurements inside a sealed container show that the pressure exerted by a gas increases as the thermal energy of the gasincreases.Which of the following best explains this pressure increase?
  1. The gas molecules stick to the walls of the container.
  2. The gas molecules radiate energy in the form of nuclear particles.
  3. The gas molecules begin to bond together into heavier molecules.
  4. The gas molecules move faster and strike the container walls more frequently.
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82. On the surface of the Moon, a ball is thrown straight up with an initial velocity. The ball has a constant acceleration due to the Moon’s gravity.On a graph of the ball’s velocity versus time, which of the following would represent the ball at its highest point above the Moon’s surface?
  1. when the velocity is equal to 0 m/s
  2. when the velocity is equal to 1.6 m/s
  3. when the velocity has its greatest value
  4. when the velocity has its most negative value
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83. A teenager removes the plastic wrapping from a CD. The pieces of wrap cling to her hand.Which of the following forces causes the wrap to cling to her hand?
  1. electrostatic
  2. gravitational
  3. magnetic
  4. net
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84. A bicycle rider is traveling at 7 m/s. During an 8 s period, the bicycle rider then slows down with a constant acceleration to a speed of 3 m/s.How far does the bicycle rider travel during the 8 s?
  1. 19 m
  2. 32 m
  3. 40 m
  4. 80 m
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85. Which of the following increases when a metal spring is stretched horizontally?
  1. potential energy
  2. kinetic energy
  3. gravitational energy
  4. electrical energy
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