Question

a stone of mass 64g is thrown vertically upward from the ground with an initial speed of 20 m/s.the gravitational potential energy at the level ground is considered to be zero. apply the principle of conservation of energy and calculate the potential energy at the maximum height attained by the stone. PLZ ANSWER

Answer 1

potential energy is 12800
2as=v sq.-u sq.
2*-10*s=0-400
-20*s=-400
s=20
Potential energy=mgh=64*10*20=
12800

Answer 2

Answer is solved in the Image