Advanced Science Primary 6 Energy

A ball is dropped from a height. As it falls and hits the ground before bouncing up, which of the following energy conversions is correct for the moment it hits the ground and compresses?

A Gravitational Potential Energy → Kinetic Energy
B Kinetic Energy → Elastic Potential Energy + Sound + Heat
C Kinetic Energy → Gravitational Potential Energy
D Elastic Potential Energy → Kinetic Energy
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Worked Solution

Step 1: As the ball falls, GPE converts to KE. Step 2: At impact, the ball compresses. The KE is converted into Elastic Potential Energy stored in the ball. Step 3: Sound and Heat are also produced during the impact. Step 4: The correct sequence is KE → EPE + Sound + Heat.

Correct answer: Kinetic Energy → Elastic Potential Energy + Sound + Heat

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