Calculating Velocity of a Ball

21 Jun 2021

Velocity Calculation

A ball is thrown straight down with a velocity of 19.6m/s. We need to determine what will be its velocity 2.0s after being released.

Answer: 39.2 m/s

Explanation: Initial velocity of the ball, u = 19.6 m/s, final velocity of ball, time, t = 2.0 s.

The ball would accelerate due to gravity, a = g = 9.8 m/s².

Using the first equation of motion:

v = u + a t

Substitute the given values:

v = 19.6 m/s + 9.8 m/s² × 2.0 s = 39.2 m/s

Thus, the velocity of the ball after 2.0 s of release would be 39.2 m/s.

What is the initial velocity of the ball?

The initial velocity of the ball is 19.6 m/s.