What do different forms of energy have in common? A. They can push or pull on objects.
B. They give objects mass.
C. They can cause changes in matter.
D. They can cause objects to move.

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?

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation