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A ball is dropped to a smooth floor from the top of a tower, which has height 50 m, and the ball rebounds to a height of 20 m after the first bounce of the ball. What is coefficient of restitution between the floor and the ball?
  • a)
    0.63
  • b)
    1.68
  • c)
    1.78
  • d)
    None of these
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A ball is dropped to a smooth floor from the top of a tower, which has...
The coefficient of restitution is given by,

When the ball is falling from the top of the tower towards the floor:
Initial velocity of the ball, u = 0 m/s
Height of the tower, h = 50 m

When the ball bounces after first collision with the floor:
Final velocity of ball, v = 0 m/s
Height of the bounce, h = 20 m

Hence, the coefficient of restitution,
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A ball is dropped to a smooth floor from the top of a tower, which has height 50 m, and the ball rebounds to a height of 20 m after the first bounce of the ball. What is coefficient of restitution between the floor and the ball?a)0.63b)1.68c)1.78d)None of theseCorrect answer is option 'A'. Can you explain this answer?
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