Question

Pls answer my question

A ball is falling freely from a certain height. It reaches the ground after 3 second. If 30 m/s (metre per second) is the velocity of the ball while touching the ground then ,
a) What is the initial velocity of the ball ?
b) What is the final velocity of the ball ?
c) Calculate its acceleration ?​

Answer 1

Explanation:

Multiply the time by the acceleration due to gravity to find the velocity when the object hits the ground. If it takes 9.9 seconds for the object to hit the ground, its velocity is (1.01 s)*(9.8 m/s^2), or 9.9 m/s.