Homework Help: Physical science

Posted by Shirley on Sunday, November 27, 2011 at 11:25pm.

The brakes of a car are applied to give it an acceleration of -3m/s^2. The car comes to a stop in 5 s. What was its speed when the brakes were applied?

Physical science - Damon, Monday, November 28, 2011 at 4:24am
v = Vi + a t
0 = Vi - 3(5)
Vi = 15

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