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## Homework Statement

A 50,000 kg locomotive is traveling at 10 m/s when its engine and brakes both fail.

Known

-----------------

V

_{i}= 10 m/s

V

_{f}= 0 m/s

mass = 50,000 kg

_______________

Find distance

## Homework Equations

How far will the locomotive roll before it comes to a stop? Assume the track is level.

## The Attempt at a Solution

F = ma

[tex]a = \frac{0-10}{0-t}[/tex]

[tex]v_f = at+v_i t[/tex]

[tex]0 = \frac{0-10}{0-t}t+10 m/s t[/tex]

after using distance formula, my answer is 29.8 m