MIND TWISTER : an iron ball of mass 4 kg is dropped from a building of height 19.6 m. What would it's approx velocity be if its instantaneous potential energy would be 1/2 of its kinetic energy??
Kindly refer to the link given below to get your answer :
https://www.meritnation.com/ask-answer/question/an-iron-ball-having-a-mass-4-kg-is-dropped-from-a-building/work-and-energy/6866707
https://www.meritnation.com/ask-answer/question/an-iron-ball-having-a-mass-4-kg-is-dropped-from-a-building/work-and-energy/6866707