1. The bicycle alone has a mass of 10 kg. A person pushes the bicycle with a force of 75 N [N] at a constant speed. Recall Newton's first law of motion. a) Name the four forces acting on the bicycle b) Draw a FBD of the bicycle. c) Find the input work done by a person pushing the bicycle for a distance of 200 m. d) Find the negative work done by the force of friction.

5. The person then lifts the bicycle up at a constant velocity, doing 49 Joules of work in the process. a) To what height did the person lift the bicycle? b) How much work does the person do if the person then walks forward for a distance of 120 m carrying the bicycle. Explain your reasoning about the amount of work done.