Primary 6 Science — Energy Practice | Standard

Standard Science Primary 6 Energy

A ball is dropped from a certain height. Which statement correctly describes the energy of the ball as it falls?

A Its kinetic energy decreases while its gravitational potential energy increases.

B Its total energy decreases to zero before hitting the ground.

C Its kinetic energy increases while its gravitational potential energy decreases.

D Both its kinetic and gravitational potential energy increase.

Show Worked Solution

Step 1: As the ball falls, height decreases, so GPE decreases. Step 2: Speed increases, so Kinetic Energy increases. Step 3: GPE is converted to KE.

Correct answer: Its kinetic energy increases while its gravitational potential energy decreases.

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