Consider this situation: A custodian pushes a large crate across the gym floor. Of the forces listed, identify which act upon the crate Normal
Gravity
Applied
Friction
Tension
Air Resistance

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.