Kinetic energy varies jointly as the mass and the square of the velocity. A mass of 10 grams and velocity of 3 centimeters per second has a kinetic energy of 45 ergs Find the kinetic energy for a mass of 6 grams and velocity of 5 centimeters per second. A mass of 6 grams and velocity of 5 centimeters per second has a kinetic energy of ergs