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A car accelerates from rest for 5 seconds at 8 mi/hr/s, heading west. It then continues...

A car accelerates from rest for 5 seconds at 8 mi/hr/s, heading west. It then continues without acceleration for 10 seconds. The brakes then slow the car to half its previous speed in 4 seconds and then to a stop in 3 more seconds. Graph the speed of the car as a function of time.

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