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July 29, 2014

Homework Help: Physics

Posted by arcos15 on Wednesday, September 19, 2012 at 10:08pm.

A car traveling 56 km/h is 22.0 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.15 s later.


(a) Assuming constant acceleration, what was the magnitude of the car's acceleration before impact?
_______ m/s2


(b) How fast was the car traveling at impact?
________ m/s

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