Standard Science Primary 6 Energy

A toy car is pushed up a ramp and then released at the top. Which energy conversion takes place as the car rolls back down?

A Electrical energy → Kinetic energy
B Gravitational potential energy → Kinetic energy + Heat energy
C Kinetic energy → Gravitational potential energy
D Chemical potential energy → Kinetic energy
Show Worked Solution

Worked Solution

Step 1: At the top of the ramp, the car has gravitational potential energy. Step [2-9]: As it rolls down, it gains speed (kinetic energy). Step [2-9]: Friction between the wheels and ramp converts some energy to heat.

Correct answer: Gravitational potential energy → Kinetic energy + Heat energy

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