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A ball (m = 8 kg) is released from rest at point A (h = 5 m). 5) If sliding on a frictionless track, what

A ball (m = 8 kg) is released from rest at point A (h = 5 m). 5) If sliding on a frictionless track, what is the speed of the ball at point B (h = 2.5 m)?

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