You are approaching a stoplight moving with a velocity of +30.0 m/s. the light turns yellow, and you apply the brakes and skid to a stop. if your acceleration is -8.00 m/s2, then determine the displacement of the car during the skidding process. how long did it take for you to stop the car? (note: the direction of the velocity and the acceleration vectors are denoted by a + and a - sign.)