Choose kinetic energy, potential energy, work or power and enter the values.
Kinetic energy = ½mv². Potential energy = mgh. Work = force × distance. Power = work ÷ time.
Lifting 10 kg by 2 m takes 10 × 9.81 × 2 = 196.2 J; doing it in 4 s is 196.2 ÷ 4 ≈ 49 W. A 1,000 kg car at 20 m/s has ½ × 1,000 × 400 = 200,000 J.