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Application of law of conservation of energy.

A basketball player makes a jump shot. The 0.6 kg ball is released at a height of 2 m above the floor with a speed of 7.2 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.20 m/s What is the work completed on the ball by air resistance, a non-conservative force?

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