What energy does an African elephant have, running at a speed of 10 m per second, whose mass is 4 tons?

Problem data: V (running speed of a given African elephant) = 10 m / s; m (elephant mass) = 4 tons (in SI m = 4 * 10 ^ 3 kg).

The kinetic energy possessed by this African elephant is determined by the formula: Ek = m * V ^ 2/2.

Let’s perform the calculation: Ek = 4 * 10 ^ 3 * 10 ^ 2/2 = 200 * 10 ^ 3 J (200 kJ).

Answer: A running African elephant has a kinetic energy of 200 kJ.