Adriver is traveling along a straight road at the speed limit of 60 mph. after two minutes, she slows at a constant rate to a stop at a stop light. two minutes later, the light turns green and she accelerates at a constant rate back up to the speed limit. three and a half minutes later, she again slows at a constant rate to a stop. after three minutes, she performs a u-turn, then accelerates at a constant rate back up to 60 mph. two minutes later, she reaches her destination and slows at a constant rate to a stop. assume that each period of slowing down and speeding up lasts 30 s and that the driver is initially moving in the +x- direction. create a graph of the driver's velocity versus time that represents her trip.