Standard Science Primary 6 Energy

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

A Potential energy increases, Kinetic energy decreases.
B Potential energy increases, Kinetic energy increases.
C Potential energy decreases, Kinetic energy increases.
D Potential energy decreases, Kinetic energy decreases.
Show Worked Solution

Worked Solution

Step 1: Potential energy depends on the height of the object. Step 2: As the ball rolls down, height decreases, so potential energy decreases. Step 3: Kinetic energy depends on speed. As the ball accelerates down, speed increases, so kinetic energy increases. Step 4: Energy is converted from potential to kinetic.

Correct answer: Potential energy decreases, Kinetic energy increases.

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