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A cricket ball of mass 150 gm is moving with a velocity of 12 m/s and is hit by a bat so that the ball is turnedback with a velocity of 20 m/s. The force of blow acts for 0.01s on the ball. The average force exerted by thebat on the bail is(a) 480 N(b) 600 N(c) 500 N(d) 400 N |
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Answer» Mass of the ball, m = 150 g = 0.15 kg Initial speed of the ball, u = -12 m/s Final speed of the bal after being hit, v = 20 m/s Impulse = change in momentum = final momentum initial momentum = Impulse = 0.15 × 20 0.15 × (-12) = 4.8 Ns |
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