Question

A ball is thrown with some speed u m/s. Show that under the free fall , it will fall on the ground with same speed ​

Answer 1

Explanation:

When a ball is thrown straight up, its speed decreases by 10 m/s each second, since the free fall acceleration, g = 10 m/s2.

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.