Homework Help: physics

Posted by Bobbie on Tuesday, November 1, 2011 at 8:00pm.

A force of -9000 N is used to stop a 1500kg car traveling at 20 m/s. What braking distance is needed to bring the car to a halt?

physics - Henry, Thursday, November 3, 2011 at 10:51pm
a = F / m = -9000 / 1500 = -6m/s^2.

d = (Vf^2 - Vo^2) / 2a,
d = (0 - (20)^2) / -12 = 33.33m.

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