What is the kinetic energy of a 10 g bullet moving at 300 m/s?

Kinetic energy = (1/2) (mass) (speed) ²

mass of the bullet = 10 grams = 0.01 kilogram

speed of the bullet = 300 m/s

Kinetic energy = (1/2) (0.01 kg) (300 m/s) ²

= (0.005 kg) (90,000 m²/s²)

= (0.005 x 90,000) kg-m²/s²

= 450 kg-m²/s²

= 450 joules