Question

What is the kinetic energy of an object moving 40m/s with a mass of 20kg?

Answer 1

`kinetic \: energy = (1)/(2) m {v}^(2) \\ (1)/(2) * 20 * 40 \\ = 10 * 40 \\ = 400joule \\ thank \: you`

Answer 2

KE = (1/2) (mass) (speed)²

KE = (1/2) (20 kg) (40 m/s)²

KE = (1/2) (20 kg) (1,600 m²/s²)

KE = (10 kg) (1,600 m²/s²)

KE = 16,000 Joules