# AP Physics

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1. A car is traveling down the road at a constant speed of 11 km/h. At time zero it is forced to stop. The driver slams on the brakes and the car travels 18 m as it uniformly accelerates, coming to a stop. The car remains at rest for 5.0 seconds. Then the driver shifts into reverse and begins to back up. It accelerates from rest to a speed of 6.0 m/s in 4.0 seconds. The car then travels at this speed for 5.0 seconds. (a) Make a velocity vs time graph for the car’s motion. (b) At the end of all this motion, what is the car’s position?

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