1.Which is the best example that something has kinetic energy?
a. a car parked on a steep hill
b. a picture hanging on the wall
c. a tennis ball rolling across the court
d. a piece of coal before it's burned
2.What is kinetic energy?
a. energy of work
b. energy of gravity
c. energy of motion
d. energy of power
3.What two factors affect an object's kinetic energy?
a. area of volume
b. weight and height
c. mass and weight
d. mass and speed​