Question

a set of bouncy balls is gently dropped toward the ground from 5 feet above the ground. another set of bouncy balls is thrown toward the ground from 5 feet above the ground. which statement is correct about the bouncy balls? (1 point) the force with which all the balls bounce back is the same. the velocities of all the balls are the same prior to hitting the ground. the velocities of all the balls increase at the same rate. the force with which all the balls hit the ground is the same.

Explanation:

When objects are in free - fall near the Earth's surface, they all experience the same acceleration due to gravity ($g\approx 32\ ft/s^{2}$ or $9.8\ m/s^{2}$). The set that is thrown has an initial downward velocity while the gently - dropped set has an initial velocity of 0. The force with which they bounce back and hit the ground depends on their momentum upon impact which is different for the two sets. The velocities prior to hitting the ground are different because of the initial velocity difference. But the acceleration (rate of change of velocity) for both sets is the same, which is the acceleration due to gravity.

Answer:

The velocities of all the balls increase at the same rate.