A warehouse worker pushes a crate of mass24kg up a ramp. Assume that he pushes 4.0mfrom rest in exactly 8.0 seconds. Assumefurther that the box is moving up the incline ata constant speed. If the effective coefficient offriction is 0.25, determine the average force0 = 30.0°exerted onto the box. What will be the power?Answer: assuming acceleration is a constant, As =(v+v,)At v,=1.0 mavgAs =–2m(v; -vi )=F.W.= 3.0N, P=At12J=1.5W8snetavgSource: modified from Nelson, Physics 12, 2009, p. 170, Question #5

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