A boy on a bicycle drags a wagon full of newspapers at 0. 80 m/s for 30. 0 minutes using a force of 40. 0 n. How much work has the boy done.

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.