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A ball of mass 0.25 kg is thrown upwards from a height of 2.5 m above ground with a speed of 11 m/s. When it

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A ball of mass 0.25 kg is thrown upwards from a height of 2.5 m above ground with a speed of 11 m/s. When it bounces on the ground it goes up 4.5 rn. How efficient was this process? Select one: a. 73% b. 52% c. 0% since ball can't get back that high. d. 67%

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