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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 ms at an angle of 60°. It gets reflected with the wall is for 0.20 s, what is the average force exerted on the ball by the wall ?

A

150 N

B

zero

C

`150 sqrt3 N`

D

300 N

Text Solution

Verified by Experts

The correct Answer is:
c
`Deltap = m upsilon sin theta-(-m upsilon sin theta)`
`= 2 m upsilon sin theta`
`F=(Deltap)/(Deltat)=(2xx3xx10)/(0.2)xx(sqrt3)/(2)=150sqrt3N`
(C) is the choice.
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Knowledge Check

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