A metal ball of mass 2 kg is allowed to fall freely from rest from a height of 5 m above the ground. (a)Taking g=10 ms^(-2) ,Calculate : (i)the potential energy possessed by the ball when it is initially at rest. (ii)the kinetic energy of the ball just before it his the ground? (b)What happens to the mechanical energy after the ball his the ground and comes to rest ?

A metal ball of mass 2 kg is allowed to fall freely from rest from a h

1.	A metal ball of mass 2 kg is allowed to fall freely from rest from a height of 5 m above the ground. (a)Taking g=10 ms^(-2) ,Calculate : (i)the potential energy possessed by the ball when it is initially at rest. (ii)the kinetic energy of the ball just before it his the ground? (b)What happens to the mechanical energy after the ball his the ground and comes to rest ?
Answer» Solution :(a)(i)100 J (II)100 J (b)MECHANICAL ENRGY converts into HEAT and sound enrgy.