VII. Energy Flash Cards
1. A 0.65-meter-long pendulum
consists of a 1.0-kilogram mass at the end of a string. The pendulum is
released from rest at position A, 0.25 meter above its lowest point. 
PE is maximum at ____ ____ KE is maximum at ____ |
PE is maximum at
and
The total energy
as the pendulum swings to |
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2. The diagram below shows block A, having mass 2m and speed v, and block B having mass m and speed 2v.
(1) the same (2) twice as great (3) one-half as great
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3a) When work is done on or by a system, there is a change in the total _____of the system. 3b) Power is the time-rate at which _____is done or _____ is expended. |
a) b) |
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4. A girl rides an escalator that moves her upward
at constant speed. As the girl rises, how do her gravitational potential energy
and kinetic energy change? |
Energy Flash Cards
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5a) Potential energy is the energy an object possesses by virtue of its _____ or _____. 5b) Kinetic energy is the energy an object possesses by virtue of its _____. |
a)
or b)
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6. Which action would require no work to be done
on an object? |