Question

a tennis ball is hit straight upwards and undergoes a free fall motion as it rises towards its highest point and then fall back downward to the ground. what changes, if any, would be observed of the velocity and the acceleration of the tennis ball as it falls downward from its highest point? pick two answers. tap to select or deselect answers. the velocity ... increases decreases remains constant the acceleration ... increases decreases remains constant

Explanation:

In free - fall motion near the Earth's surface, the acceleration due to gravity \(g\approx9.8\ m/s^{2}\) is constant and acts downwards. As the tennis ball falls downward from its highest point, its initial velocity is \(v = 0\) at the highest point. According to the kinematic equation \(v=v_0 + at\) (where \(v_0 = 0\) at the highest point, \(a = g\) and \(t>0\)), the velocity of the ball increases in the downward direction.

Answer:

The velocity... increases
The acceleration... remains constant