C 10. The force that pulls objects toward the center of the Earth.
motion
b. air resistance
C. gravity
d. friction
11. A push or pull that causes an object to move, stop, or change direction.
a force
b. motion
energy
d. inertia
12. If a tennis ball, a baseball, and a golf ball are dropped together from a high place, which ball will
land first?
a. They land at the same time.
b. The baseball lands first.
C. The golf ball lands first.
d. The tennis ball lands first.
13. Why does a crumpled piece of paper land before a flat sheet of paper?
a. Gravity exerts more force on the crumpled paper.
b. There is more air resistance on the flat paper.
C. The crumpled paper is heavier
d. The flat paper is lighter.
14. A ball is rolled on four different types of materials. Which material will cause the least amount of
friction between it and the ball?
a. Tile Floor
b. Carpet
C. Grass
d. Cement Sidewalk​