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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 contanct with the wall for 0.25 s, the average force aciton 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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