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A 3 kg ball strikes a heavy rigid wall w...

A 3 kg ball strikes a heavy rigid wall with a speed of 10 m/s at an angle of `60^(@)`. It gets reflected with the same speed and angle as shown in Fig. 15.3.11. It the ball is in contact with the wal for 0.20 s, what is the average force exerted on the ball by the wall ?

A

zero

B

150 N

C

150 `sqrt(3)` N

D

300 N

Text Solution

Verified by Experts

The correct Answer is:
c
`F -= dp//dt = 2mv sin theta//0.2 = 60 sin 60//0.2 = 150 sqrt(3)N`
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