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A 0.5 kg ball moving with a speed of 12 ...

A `0.5 kg` ball moving with a speed of `12 m//s` strikes a hard wall at an angle of `30^(@)` with the wall. It is reflected with the same speed and at the same angle . If the ball is in contact with the wall for `0.25 s`, the average force acting on the wall is

A

48N

B

24N

C

12N

D

96N

Text Solution

Verified by Experts

The correct Answer is:
B
`F_("avg")=(Deltap)/(t)=(2mv sin 30^(@))/(0.25)`
`(2xx0.5xx12)/(1)xx(1)/(2)xx4=24N`
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