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A child drops a ball - AQA - GCSE Physics - Question 1 - 2018 - Paper 1
Question 1
A child drops a ball. The ball hits the ground and bounces. Figure 1 shows the velocity-time graph for the ball from when the ball is dropped until when the ball re... show full transcript
Worked Solution & Example Answer:A child drops a ball - AQA - GCSE Physics - Question 1 - 2018 - Paper 1
Step 1
Describe the motion of the ball between points A and B on Figure 1.
Answer
Between points A and B, the ball experiences uniform acceleration. This is indicated by a straight line on the graph with a positive slope, implying that the velocity of the ball increases at a constant rate as it falls.
Step 2
Step 4
Explain how the data in Figure 1 shows this energy transfer.
Answer
When the ball hits the ground, its velocity just after the bounce is less than just before it hit the ground. This indicates a loss of kinetic energy, which is transferred to the Earth. Also, at the top of the bounce, the height is less than the height from which it was dropped, indicating a loss of gravitational potential energy as well.