Standard Science Primary 6 Energy

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

A Its kinetic energy increases and its potential energy decreases.
B Its potential energy increases and its kinetic energy decreases.
C Both kinetic and potential energy decrease.
D Both kinetic and potential energy increase.
Show Worked Solution

Worked Solution

Step 1: Height decreases as it rolls, so Gravitational Potential Energy decreases. Step 2: Speed increases as it rolls, so Kinetic Energy increases. Step 3: Potential energy is converted into kinetic energy.

Correct answer: Its kinetic energy increases and its potential energy decreases.

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