## College Physics (4th Edition)

On the moon, the feather and the brick would reach the surface at the same time. With no drag force from air exerting an upward force on the objects, the only force on the objects would be the force of gravity. The downward acceleration for both objects would be $g_{moon}$. Therefore, both objects would reach the surface at the same time. During the Apollo 15 mission, astronaut David Scott simultaneously dropped a hammer and a feather on the moon. Both objects reached the moon's surface at the same time.