Standard Science Primary 6 Energy

A toy car is wound up using a key. When released, the car moves across the floor. Which of the following shows the correct energy conversion?

A Kinetic energy → Elastic potential energy
B Elastic potential energy → Kinetic energy
C Chemical potential energy → Kinetic energy
D Gravitational potential energy → Kinetic energy
Show Worked Solution

Worked Solution

Step 1: Winding the key stores energy in the spring inside the car (Elastic Potential Energy). Step 2: Releasing the car allows the spring to unwind, causing the wheels to turn. Step 3: The stored energy is converted into energy of motion (Kinetic Energy).

Correct answer: Elastic potential energy → Kinetic energy

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