4. Two workers move a box across a horizontal, frictionless surface using two ropes attached to the box. Worker 1 exerts a force of magnitude F, = 25 N and worker 2 exerts a force of magnitude F, = 50 N; the angles at which the forces are applied in indicated in the figure. direction of motion == a. Ifthe box moves 10m to the right, how much work is done on the box by each worker? Is the box speeding up or slowing down. b. Ifthe box is moving 2.5 m/s to the right, what is the rate at which the two workers are doing work? 6. 7. Describe a situation where static friction does positive work. Describe a situation where static friction does negative work. Imagine you're seated in a bus and the bus is making a left turn while travelling at constant speed. Draw a free body diagram for you, the passenger, and label all the forces. Force each force, decide whether the force is doing positive, negative, or zero work. Explain why