Determine the kinetic energy of a 7.5 kg roller coaster car that is moving with a speed of 42.8 m/s.

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

How do we measure or think of speed in the united states?

Auniform crate c with mass mc is being transported to the left by a forklift with a constant speed v1. what is the magnitude of the angular momentum of the crate about point a, that is, the point of contact between the front tire of the forklift and the ground