zarayahjmassie
zarayahjmassie zarayahjmassie
  • 24-11-2020
  • Physics
contestada

16. A train has 6000) of kinetic energy. It is traveling at 40 m/s. What is the mass of the train?

Respuesta :

Stephen46
Stephen46 Stephen46
  • 30-11-2020

Answer:

7.5 kg

Explanation:

The mass of the train can be found by using the formula

[tex]m = \frac{2k}{ {v}^{2} } \\ [/tex]

k is the kinetic energy

v is the velocity

From the question we have

[tex]m = \frac{2(6000)}{ {40}^{2} } = \frac{12000}{1600} = \frac{120}{16} = \frac{15}{2} \\ [/tex]

We have the final answer as

7.5 kg

Hope this helps you

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