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Q. Someone in a car going past you at the speed of 49 meters per second drops a small rock from a height of 2.2 meters. Acceleration due to gravity 9.8 meters per second squared. How far from the point of the drop will the rock hit the ground?

Q. A 350 piano slides 3.5 down a 34 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline . The effective coefficient of kinetic friction is 0.34.

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