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yer kicks a ball of mass 250 g placed at the centre of a field. The ball leaves his foot with aspeed of 8 m/s. Find the work done by the player on the ball |
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Answer» Work done = change in Kinetic Energy initital Kinetic Energy = 0 final Kinetic Energy =1/2×m×v^2 Here m=0.25 kg ; v=8 m/s so Kinetic Energy =1/2×0.25×8^2 =8 J so work done = 8-0=8 joule |
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