Question

A ball is thrown up with a speed of $9.8m{s}^{-1}$. What is the speed of the ball at the highest point?

Answer 1

1. When a ball is thrown up, due to the gravitational force, the velocity of the ball decreases at the rate of $\raisebox{1ex}{$9.8m{s}^{-1}$}\!\left/ \!\raisebox{-1ex}{$s$}\right.$ such that at the highest point, the ball comes to rest for a while.

2. Due to the rest position, the speed of the ball becomes zero.

Hence, when a ball is thrown up with a speed of $9.8m{s}^{-1}$ , the speed of the ball at the highest point is zero.