Two golf balls are thrown with the same speed off the top of a large bridge at the same time. ball a is thrown straight downward, and ball b is thrown horizontally off the bridge. which ball hits the ground first?
a. ball a
b. ball b
c. both balls hit at the same time.
d. we would need to know the speed.

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.