What kinetic energy does a body weighing 40 kg acquire if it moves at a speed of 20 m / s?
| September 18, 2021 | education
m = 40 kg.
V = 20 m / s.
Ek -?
The kinetic energy of the body Ek is called the energy of motion and is determined by the formula: Ek = m * V ^ 2/2, where m is the mass of the body, V is the speed of movement of the body.
Ek = 40 kg * (20 m / s) ^ 2/2 = 8000 J.
Answer: the body has kinetic energy Ek = 8000 J.
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