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3) A 0.12 kg mass is sliding up a ramp with friction. Its speed at the...

3) A 0.12 kg mass is sliding up a ramp with friction. Its speed at the bottom is 3.4 m/s. It slows down as it goes up and finally stops when it is 0.45 m above the bottom. Find the initial and final values of the mechanical energy, and the work done by friction.

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