You get a running start, pushing a box of mass 20.7 kg up to a ramp of grade (slope) 0.66 and friction coefficient 0.56. The box has a speed 8.7 m/s when it starts up the ramp, the same time that you let it go. The ramp ends at a platform of height 1.53 m. (a) What is the unit vector pointing up the ramp? t =[ 2 (b) What is the upward normal direction from the ramp? n = 2 (c) Find the horizontal direction in terms of the ton basis. y = [ t + (d) Find the vertical direction in terms of the t-n basis. 2 = It + In (e) Write the weight in the t-n basis. W = t + (f) What is the speed of the box at the top of the ramp