At what speed is the kinetic energy of a body weighing 3 kg equal to 600 J.
| February 24, 2021 | education
To find the required speed of a given body, we use the formula: Ek = m * V ^ 2/2, whence V = √ (2Ek / m).
Values of variables: Ek – kinetic energy (Ek = 600 J); m is the mass of a given body (m = 3 kg).
Let’s calculate: V = √ (2 * 600/3) = √400 = 20 m / s.
Answer: The speed of a given body should be equal to 20 m / s.
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