What is the kinetic energy of an object that has a mass of 30 kilograms and moves with a velocity of 20 m/s?

A. 12,000 J

B. 6,000 J

C. 2,940 J

D. 5,880 J

Kinetic Energy = (1/2) (mass) (speed) ².

Just take that formula, write "30" in place of 'mass', write "20" in place

of 'speed', then do the arithmetic on the right side and you'll have the

kinetic energy. When all the measurements are in SI units, you can

do that.

(Don't forget about the ' 1/2 ', and don't forget to square the speed.)