Question

A ball comes down with gravity at an altitude of 10 meters with initial velocity. If it collides with the ground, it gives 50% energy in the collision and then returns to the same height, so tell the initial velocity. ​

Answer 1

Explanation:

HEY MATE ..

Initial total energy at height h is, = 1/2 mu ^2 + mgh

⇒Energy of ball after collision, =50% of total energy.

⇒As ball rebounds to same height h, then

mgh= 50% 0f total energy.

⇒1 /4 mu ^2 + 1 / 2 magh .

⇒

therefore, u =

sqrt(2gh)=14m/s

HOPE IT HELPS YOU

HOPE IT HELPS YOU 50 THANKS + FOLLOW =INBOX

Answer 2

Explanation:

SEE THE ATTACHMENT................