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Cards In This Set
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If you push an object twice as far while applying the same force, you do
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Twice as much work
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A job is done slowly, while an identical job is done quickly. Both jobs require the same amount of work, but different amounts of
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Power
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If an object is raised twice as high, its potential energy will be
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Twice as much
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A ball rolling down an incline has its maximum kinetic energy at
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The bottom
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No work is done by gravity on a bowling ball that rolls along a bowling alley becauuse
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The force on the ball is at right angles to the ball's motion
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A jack system will increase the potential energy of a heavy load by 1000 J with a work input of 2000 J. The efficiency of the jack system is
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50%
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A moving object has
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Speed, velocity, momentum, and energy
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A feather and a coin dropped in a vacuum fall with equal
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Accelerations
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Which moves faster in m/s on a merry-go-round: a horse on the inside or a horse on the outside near the rim?
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Outside horse
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An industrial flywheel has a greater rotational inertia when most of its mass is
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Nearest the rim
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A coin and a ring roll down an incline starting at the same time. The one to reach the bottom first will be the
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Coin
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Put a pipe over the end of a wrench when trying to turn a stubborn nut on a bolt, to effectively make the wrench handle twice as long, you'll multiply the torque by
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Two
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When a twirling ice skater brings her arms inward, her rotational speed
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Increases
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Consider a rotating donut-shaped space habitat where living quarters are on the inside surface farthest from the axis. If the rotational speed of the habitat increases, the apparent weight of people inside
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Increases
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For a system in mechanical equilibrium the resultant forces and torques must
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Both be zero
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