A balla of mass 5 kg is dropped from a height of 10 meters. What is the kinetic energy after 1 second has elapsed? First i found the velocity using this equation V^2=2gh = 14m/s Then I used this equation to find Kinetic Energy KE=1/2mv^2 and got this 490 J. But i don't know how to find KE after 1 second elapsed. Can anyone help me?