Which graph best represents the velocity–time graph for a ball that is dropped from rest and bounces repeatedly?
A
B
C
D - AQA - A-Level Physics - Question 23 - 2017 - Paper 1
Question 23
Which graph best represents the velocity–time graph for a ball that is dropped from rest and bounces repeatedly?
A
B
C
D
Worked Solution & Example Answer:Which graph best represents the velocity–time graph for a ball that is dropped from rest and bounces repeatedly?
A
B
C
D - AQA - A-Level Physics - Question 23 - 2017 - Paper 1
Step 1
Identify the Scenario
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Answer
The question describes a situation where a ball is dropped from rest and bounces repeatedly. In this scenario, the ball accelerates downward due to gravity until it hits the ground, then decelerates as it bounces back up.
Step 2
Analyze the Options
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Answer
Review each graph option (A, B, C, D) to determine how they depict the behavior of the velocity of the ball over time:
Graph A: Shows a series of oscillating curves, which may not accurately represent the velocity behavior.
Graph B: Shows increasing and decreasing segments but does not depict realistic bounces.
Graph C: Represents sharp changes in velocity which might indicate incorrect behavior.
Graph D: Shows a smooth periodic relation between velocity and time, consistent with a bouncing ball motion.
Step 3
Select the Best Representation
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Answer
Graph D is the best representation because it shows a continuous oscillating pattern where each bounce has a consistent peak and returns downward, which reflects the physical motion of a bouncing ball effectively.
