Stacey sees a person pushing a lawn mower across level ground. She is walking at constant speed and pushing the mower with constant force.
Could the lawn mower move faster than the person is walking?

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.