What energy does a body weighing 25 kg have, moving at a speed of 4 m / s?
| April 12, 2021 | education
m = 25 kg.
V = 4 m / s.
Ek -?
The kinetic energy of the body Ek is a scalar physical quantity, which is determined by the formula: Ek = m * V ^ 2/2, where m is the mass of the body that moves, V is the speed of the body.
The kinetic energy of the body Ek shows what kind of mechanical work A the moving body can perform.
Ek = 25 kg * (4 m / s) ^ 2/2 = 200 J.
Answer: a body that moves has a kinetic energy Ek = 200 J.
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