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Illusion [34]
3 years ago
5

A train travelling at 20 m/s has 2 000 000 J of kinetic energy. What is the mass of the train?

Physics
2 answers:
Slav-nsk [51]3 years ago
8 0

Answer:

10,000 kg

Explanation:

.

Svetlanka [38]3 years ago
3 0

Answer:

<h2>10,000 kg</h2>

Explanation:

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

m =  \frac{2k}{ {v}^{2} }  \\

k is the kinetic energy

v is the velocity

From the question we have

m \frac{2(2000000)}{ {20}^{2} }  =  \frac{4000000}{400}  =  \frac{40000}{4}  \\

We have the final answer as

<h3>10,000 kg</h3>

Hope this helps you

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