Advanced Science Primary 6 Energy

A ball is held at the top of a ramp and then released. Which statement about its energy is correct as it rolls down?

A Total energy is increasing.
B Its kinetic energy is constant.
C Its gravitational potential energy is being converted into kinetic energy.
D Its gravitational potential energy is increasing.
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Worked Solution

Step 1: At the top, the ball has GPE. Step [2-9]: As it rolls down, it loses height (loses GPE) and gains speed (gains kinetic energy). Step [2-9]: GPE is converted into kinetic energy.

Correct answer: Its gravitational potential energy is being converted into kinetic energy.

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