Two metal balls are dropped from the top of a two-story building at the same time. One ball is twice as heavy as the other ball. Which statements about their motion are true? Assume that air resistance isn't a factor. -the ball falls with constant velocity. -the balls fall with constant acceleration. -the velocity of the heavier ball is twice that of the lighter ball. -the balls land at the same time

the balls fall with constant acceleration

Explanation:

Galileo discovered that the motion of objects falling towards the earth surface  is one of constant acceleration. This acceleration came to be called the acceleration due to gravity.

The acceleration due to gravity depends on the mass of the earth and radius of the earth rather than on the mass of the falling objects.

Hence, the two balls fall with constant acceleration known as the acceleration due to gravity.

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