A 3 kg ball strikes a heavy rigid wall with a speed of 10 m/s at angle of 60 deg with the wall. It gets reflected with the same speed at angle 60 with the wall. If the ball was in contact with the wall for 0.2 s, what is the average force exerted on the ball by the wall ?
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Answer:
t gets reflected with the same speed and angle as shown here. If the ball is in contact with the wall for 0.20s, what is the average force exerted on the ball by the wall?(a) 150 ... similarly, ball away from wall(V-final)= -10 cos60 = -5m/s ... negative sign shows that force exerted by wall is in opposite direction.
Explanation:
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20.25 is the average force of the wall exerted on the ball.
Explanation:
20+25=45
45×0.45=20.25
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