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If a train car with a mass of 10,000 kg traveling at 50 m/s is brought...

If a train car with a mass of 10,000 kg traveling at 50 m/s is brought to a stop in 100m, what is the magnitude of the force that stops it?

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Answer #1

From the relation,

is the final velocity, is the initial velocity, is deceleration, and is the distance traveled.

Here,

So in this case,

This is the deceleration. So the force is,

This is the force that stops the train.

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