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1. A cart with a mass of 3.00 kg rolls from the top of an inclined plane that is 7.50 m long with its upper

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1. A cart with a mass of 3.00 kg rolls from the top of an inclined plane that is 7.50 m long with its upper end at a height of 3.75 m above the ground. The force of friction acting on the cart as it rolls is 4.50 N in magnitude. (a) What is the change in gravitational potential energy when the cart moves from the top of the inclined plane to ground level? (b) What is the work done by friction

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