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A rubber ball falling from a height of 5...

A rubber ball falling from a height of `5 m` rebounds from hard floor to a height of `3.5 m`. The `%` loss of energy during the impact is

A

`20 %`

B

`30 %`

C

`43 %`

D

`50 %`

Text Solution

Verified by Experts

The correct Answer is:
B
percentage loss of energy `= (h_(1) -h_(2))/(h_(1)) xx 100 %`.
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Knowledge Check

  • A body falling from a height of 10 m rebounds from the hard floor . It

    A
    `0.89`
    B
    `0.56`
    C
    `0.23`
    D
    `0.18`

  • A body falling from a height of 10m rebounds from hard floor. If it loses 20% energy in the impact, then coefficient of restitution is

    A
    0.89
    B
    0.56
    C
    0.23
    D
    0.18

  • A body dropped from a height of 20 m rebounds to a height of 15 m. What is the loss is energy?

    A
    0.4
    B
    0.3
    C
    0.2
    D
    0.25

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