Which statement best defines a relationship between work and energyThe table represents the forces on four objects, with directions. Which best explains the forces acting on the objects

Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?

Phase changes are chemical changes. true or false

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.