Thursday
July 24, 2014

Homework Help: physics

Posted by Ari on Sunday, October 30, 2011 at 2:35pm.

A car starts from rest and travels for 7.8 s with a uniform acceleration of 3.2 m/s2. The driver then applies the brakes, causing a uniform acceleration of −1.1 m/s2. If the brakes are applied for 2.8 s, how fast is the car going at the end of the braking period? Answer in units of m/s.

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