Coefficient Of Restitution
Mediumphysics
A ball is dropped from a height of 4 m and rebounds to a height of 1 m. What is the coefficient of restitution?
Select the correct option:
Solution
Incorrect! Answer:
0.5
- Speed Analysis: Velocity just before impact v1=2gh1. Velocity just after rebound v2=2gh2.
- Definition: Coefficient of restitution (e) is the ratio of relative velocity after to relative velocity before: e=vafter/vbefore.
- Formula derivation: e=2gh12gh2=h1h2.
- Identify Heights:
- h1=4 m, h2=1 m.
- Calculation: e=1/4=1/2=0.5.
🔒 Solution Hidden from View
Submit your answer to unlock the detailed step-by-step solution.
About This Question
- Subject
- physics
- Chapter
- work, energy and power
- Topic
- coefficient of restitution
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
0.5
- Speed Analysis: Velocity just before impact v1=2gh1. Velocity just after rebound v2=2gh2.
- Definition: Coefficient of restitution (e) is the ratio of relative velocity after to relative velocity before: e=vafter/vbefore.
- Formula derivation: e=2gh12gh2=h1h2.
- Identify Heights:
- h1=4 m, h2=1 m.
- Calculation: e=1/4=1/2=0.5.
This medium difficulty physics question is from the chapter work, energy and power, covering the topic of coefficient of restitution. It appeared in the 2025 exam.
Looking for more practice? Explore all physics questions or browse work, energy and power questions on RankGuru.