Standard Science Primary 6 Energy

A toy car is released from the top of a ramp. As it rolls down, what happens to its gravitational potential energy and kinetic energy?

A Both decrease.
B Potential energy decreases, kinetic energy increases.
C Both increase.
D Potential energy increases, kinetic energy decreases.
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Worked Solution

Step 1: Gravitational potential energy depends on height. Step 2: Kinetic energy depends on speed. Step 3: As the car rolls down, it loses height (Potential Energy decreases) and gains speed (Kinetic Energy increases).

Correct answer: Potential energy decreases, kinetic energy increases.

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