Energy is “the capacity to do work” where work is force times distance.?
There are two
types of energy – potential energy and kinetic energy. Indicate whether the following
represent kinetic energy, potential energy, or both.
a) electrical energy stored in a battery
b) chemical energy within a gallon of
gasoline
c) car speeding at 55 mph
d) car travelling up a mountain at a slow speed of 5 mph
e) a rock falling down from the top of a tower.
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Answers & Comments
a) Potential energy
b) Kinetic energy
c) Kinetic energy
d) Both -- when it is travelling up a mountain it is loosing kinetic energy and gaining potential energy.
e) Both - It is loosing potential energy and at same time gaining kinetic energy.
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