Question

An object projected vertically upward with initial velocity 'u' from a tower which have height 'h' . If it takes time to reach the ground 't' , then show that , h=-ut + 1/2gt²

Answer 1

For a freefall,

Acceleration , a=gm/s2a=gm/s2

Initial velocity , u=0m/su=0m/s

Let the distance travelled by the ball be x.

Applying second equation of motion,

s=ut+(1/2)at2s=ut+(1/2)at2

x=0+(1/2)gt2