2 Problem Consider a box, with an initial velocity vo, that slides up a ramp with angle 0, as shown below. The coefficient of friction between the box and the ramp is u. A short while later the box mo- mentarily comes to rest before begining to slide back down the ramp. Question: What is the additional height, h, attained by the box at the instant it momentarily comes to rest? Write your answer as an expression in terms of the variables of the problem given: (μ, g, vo, 0) At rest (momentarily) AB h [2] VO Start 0 9

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Q 3

A box of mass m is resting in the flat bed of a truck which is stopped at a red light on a road which slopes upward at an angle qabove the horizontal. The coefficients of friction between the box and the truck bed are given by μs and μk.The light turns green and the truck begins to accelerate.Write all answers in terms of variables given in the problem and any appropriate constants. 1)Find the work done by friction as the box slides to the back of the truck in terms of m, L, μk, q, and any appropriate constants.

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Solve the problem correctly in handwritten format.