An out fielder throws a cricket ball with an initial kinetic energy of 800J and an infielder catches the ball when its kinetic energy is 600J. If the path of the ball between them is assumed straight and is 20m long, the air resistance acting on the ball is
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An out fielder throws a cricket ball with an initial kinetic energy of 800J and an infielder catches the ball when its kinetic energy is 600J. If the path of the ball between them is assumed straight and is 20m long, the air resistance acting on the ball is