Coach Pollard still thinks he is really fast and so he went out to sprint at the track meet. He ran at a velocity of 4 m/s. His mass is about 68 kg. About how much Kinetic Energy did Coach Pollard use before he inevitably hurt himself after the run? KE=1/2mv^2 *

i think they are all correct

explanation:

they seem good

v=ir = 3x15 =45 v

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

i'm on my way to history not a mistory.