The potential energy of a roller coaster is greatest when it is at the top of a steep hill. The potential energy is greatly reduced as it descends the slope and reaches the bottom. As a result, the law of conservation of energy does not apply here because energy is destroyed.

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Energy is interconvertible

Dissipated energy can't be measured

Energy is visible always

Energy is destroyed when it disappears

answer is C.

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Detailed Solution

Potential energy is stored energy that is affected by the relative position of various parts of a system.
When a spring is compressed or stretched, its potential energy increases.
A steel ball has more potential energy when raised above ground than when it falls to Earth.
The potential energy of a roller coaster is greatest when it is at the top of a steep hill.
The potential energy is greatly reduced as it descends the slope and reaches the bottom.
However, kinetic energy grows. As a result, there is a conversion of potential energy to kinetic energy and no energy destruction.

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