An elastic ballsfalls from a height of 10 m . If lose 80 % of its total energy due to impact . The ball will now rise to a height of ?

An elastic ballsfalls from a height of 10 m . If lose 80 % of its tota

1.	An elastic ballsfalls from a height of 10 m . If lose 80 % of its total energy due to impact . The ball will now rise to a height of ?
Answer» 80 m 40 m 60 m 20 m Solution :Here ball loses 80 % ENERGY so when it hit the GROUND , its potential energy will be 20 % to initial potential . If new height is h. then , MGH = 20 % mgh ` h = 0.2 h = 0.2 xx100` ` :. h = 20 m `