Question

An object is thrown vertically from a height of `2 m` at `5m/s`. How long will it take for the object to hit the ground?

Answer 1

It will take 1.32 seconds for the object to hit the ground.

Explanation:

If a body is projected or thrown vertically up from a height 'h' with a velocity 'u' then time taken by the body to reach the ground is
`t = [u+sqrt(u^2 + 2gh)]//g`
Consider 'g' acceleration due to gravity as `9.8m/s^2`
By substituting the values in above equation we get
`=> t= [5+sqrt((5)^2 + 2xx9.8xx2)]//9.8`
`:.t=1.32 seconds`