Question

A ball having a mass of 500 grams is dropped from a height of
9.00 meters. What is its kinetic energy when it hits the ground?

Answer 1

You should find the final velocity by using Vfin=Vin +g*t then you can use kinetic energy equation

E=(m*V^2)/2

note that mass unit have to be in kilogram.

Answer 2

the kinetic energy is equal to its potential energy at the start.

Answer 3

IM CONFUSED