- #1

Jon Winter

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## Homework Statement

Imagine a maglev train car on a track. The train car weighs 1000 kilograms and travels at 10 meters per second. Without any external force, the train car slows down to 5 meters per second in 10 seconds. How much force does it take to return the train car to traveling at 10 meters per second? Convert that force to watts.

## Homework Equations

F=MA

A = (vf -vi)/t

W = (N*m)/s

## The Attempt at a Solution

· F = M*A

· F = (1,000 kg)*((10 m/s – 5 m/s)/10 s)

· F = 5,000 kgm/s^2

· F = 5,000 Newtons

· Watt = (N*m)/s

· W = (5,000N * 5m)/10s

· W = 2,500

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