Question

2. A ball is thrown vextically upwards with
speed u show that the hall reaches
back to the initial position with the
same speed o.
Solt​

Answer 1

Answer:

Let Height be H

and initial velocity is u

and let final velocity be v

and Mass of ball be m

Therefore using Conservation Of Mechanical Energy:

Ui+Ki=Uf+Kf

0+ 1/2mu²=0+1/2mv²

0+ 1/2mu²=0+1/2mv²=> u²=v²

0+ 1/2mu²=0+1/2mv²=> u²=v²=>v=u Hence Proved