Homework Help: physics

Posted by Donald on Monday, October 8, 2012 at 11:24am.

A 1720-kg car is traveling with a speed of 15.0 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 47.0 m?

physics - Steve, Monday, October 8, 2012 at 12:31pm
v = 15-at
v=0 when t = 15/a

47 = 1/2 at^2
so, a = -225/94

F = ma

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