Question

Johnny is standing on a platform 12 meters high throw ball up velocity 11 meters what time will ball hit the ground after 2 seconds

Answer 1

The ball will hit the ground after 1.54 seconds

Explanation:

This is a form of projectile motion in horizontal direction

Thus, time taken to reach the ground

`t = \sqrt{(2*d)/(g) }`

Substituting the given values in above equation, we get -

`t = \sqrt{(2* 12)/(10) } \\t = 1.54`seconds