Problem 1: A box m = 89 kg is being pulled by a constant force F = 143 N at an angle of 0 = 27 degrees. The initial speed of the box is zero. F M X theexpertta.com Part (a) Write an expression for the work done by force F as the block moves a horizontal distance d. Expression W = Select from the variables below to write your expression. Note that all variables may not be required. cos(a), cos(Q), cos(0), sin(a), sin(q), sin(0), a, B, 0, d, F, g, h, j, m, P, t, tan(a), tan(Q), tan(0) Part (b) How much work, in joules, was done in moving the block 5.7 m? Numeric : A numeric value is expected and not an expression. W = Part (c) What is the speed of the box at d = 5.7m if the surface is frictionless? Numeric : A numeric value is expected and not an expression. vd=Problem 2: Suppose the ski patrol lowers a rescue sled carrying an injured skiier, with ' a combined mass of 75 kg, down a 60.0\" slope at constant speed, as shown in the ' Figure. The coefficient of kinetic friction between the sled and the snow is 0.100. F 'I llL'L'\\|ll'l'll:l.Cl Part (a) How much work, in joules, is done by friction as the sled moves 30.5 m along the hill? Numeric : A numeric value is expected and not an expression. Wf = Part (b) How much work, in joules, is done by the rope on the sled over this distance? Numeric : A numeric value is expected and not an expression. Wrope : Part (c) What is the work, in joules, done by the gravitational force on the sled? Numeric : A numeric value is expected and not an expression. W3: Part ((1) What is the net work, in joules, done on the sled? Numeric .' A numeric value is expected and not an expression. Wnet