Question

what happens to the velocity of a ball as it is dropped off a cliff? it decreases at a uniform rate it is constant it increases at a uniform rate it increases at a non - uniform rate

Explanation:

Step1: Recall free - fall concept

When a ball is dropped off a cliff, it is in free - fall. In the absence of air resistance, the only force acting on the ball is the gravitational force.

Step2: Analyze acceleration

The acceleration due to gravity near the Earth's surface is approximately constant ($g\approx9.8\ m/s^{2}$). According to the kinematic equation $v = v_0+at$, where $v_0 = 0$ (initial velocity of a dropped object), $a = g$ and $t$ is time. As time $t$ increases, the velocity $v$ increases. Since $a$ is constant, the velocity increases at a uniform rate.

Answer:

It increases at a uniform rate