A ball with a mass of 0.5 kilograms is lifted to a height of 2.0 meters and dropped. It bounces back to a height of 1.8 meters. The energy of the ball has been reduced by joules after bouncing back. This reduction happens because potential energy transforms to energy. Hint: Use PE = m * g * h where g = 9.8 m/s2. NextReset
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