What is the kinetic energy of a hare weighing 800 grams at a speed of 50 km / h.

univerkov | May 11, 2021 | education

These problems: m (the mass of the hare in question) = 800 g (in SI m = 0.8 kg); V (speed of the hare) = 50 km / h (in SI V = 13.89 m / s).

We calculate the kinetic energy of the hare under consideration by the formula: Ek = m * V ^ 2/2.

Let’s make a calculation: Ek = 0.8 * 13.89 ^ 2/2 ≈ 77 J.

Answer: The hare has a kinetic energy of 77 J.

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