when a projectile is released, why is there a change in speed in one dimension but not the other?(1 point)

Question

a) a projectile only moves in two dimensions because it is thrown.
b) a projectile only moves in one dimension.
c) the force of gravity only acts in a downward direction.
d) there can be only one force acting on an object at a time.

Answer 1

c) the force of gravity only acts in a downward direction.