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A Ball Is Dropped Bharti Kali From Rest At A Height Of 12 Metre After Streaking The Ground It Bounce To A Height Of 9m. What Fraction Of Kinetic Energy Does IT Lose On Streaking The Ground - Math Discussion

A ball is dropped Bharti Kali from rest at a height of 12 metre after streaking the ground it bounce to a height of 9m. What fraction of kinetic energy does IT lose on streaking the ground