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4. A 1-kg ball falls from a height of 20 meters and hits the ground at 16 m/s. a. How much energy is lost during

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4. A 1-kg ball falls from a height of 20 meters and hits the ground at 16 m/s. a. How much energy is lost during the fall? b . What was the average force of air friction slowing its fall? c. What power was being dissipated by the "drag force" (air resistance)

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