Homework Help: Physics

Posted by Kellie on Friday, September 21, 2012 at 2:26am.

A 1560 kg car is traveling with a speed of 14.5 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 53.3 m?

Physics - drwls, Friday, September 21, 2012 at 4:21am
The force must do negative work (i.e., have work none on it) that equals the initial kinetic energy.

F*53.3 = (M/2)*Vo^2 = 1.64*10^5 J

F = 3080 Newtons

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