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7. A 2.5-kg block slides down a 25°inclined plane with constant acceleration. The block starts from rest at the top. At the bottom, its velocity reaches 0.65 m/s. The length

of the incline is 1.6 m. (a) What is the acceleration of theblock? (b) What is the coefficient of frictionbetween the plane and block? (c) Does the result of either a or bdependon the mass of the block?

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