Question

A ball is thrown vertically upwards with a velocity 'u'. The velocity with which it falls to the earth again is:

Answer 1

Answer:

u

Explanation:

when it is thrown up,

at top most point v=0

v=u+gt

therefore, u=gt

                 t=u/g

when it is in top most point,

it is v=u+gt, now here u=0

     v=g.u/g

     v=u

there fore we can conclude that at what velocity it is going up at same velocity it is coming back