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Kindly show how u got the answer thank you A 4.00 x 10' kg subway train is brought to a stop from a speed of

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Kindly show how u got the answer thank you

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A 4.00 x 10' kg subway train is brought to a stop from a speed of 0.500 m/s in 0.500 m by a large spring bumper at the end of its track. What is the force constant k of the spring (in N/m)? (Enter a number.) 291.67 x N/m Submit

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