A 22 kg box is given a short push up a ramp that makes an angle of 50°. The coefficient of kinetic friction between the ramp and the box is 0.30. If the height of the ramp is 15 m calculate the initial velocity of the box that is required to reach the top of the ramp (a) 13 m/s (b) 21 m/s (c) 19 m/s (d) 15 m/s
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