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April 21, 2015

April 21, 2015

Posted by **Madeline** on Tuesday, December 7, 2010 at 10:53am.

- physics -
**drwls**, Tuesday, December 7, 2010 at 11:25am(Work done against braking force) = (initial kinetic energy)

F*X = (1/2) M Vo^2

F = M Vo^2/(2 X)

Be sure to convert 72 km/h to 20 m/s before using the formula.

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