TWO BALLS OF DIFFERNT MASSES ARE THROWN VERTICALLY UPWARD WITH SAME INITIAL VELOCITY WHICH ONE WILL RISE TO A GREATER HEIGHT .WHY
They will rise to the same height.
We can find the height using the third equation of motion.
v²-u²=2as
The height, s, will depend only on initial velocity, final velocity (0 in this case) and the acceleration due to gravity.
It will not depend upon the mass.