In the figure below, the two boxes are initially moving with a speed v. (a) Ignore friction and determine an expression for the distance d the boxes travel before coming to rest. Choose the floor as the position for zero gravitational potential energy. (Use the following as necessary: m1, m2, v, and g for the acceleration due to gravity.) d = (b) Is the work done on box 2 by the rope positive, negative, or zero? positive negative zero (c) Determine an expression for the work done on box 1 by the rope. (Use the following as necessary: m1, m2, v, and g for the acceleration due to gravity.)