Q. A person driving her car at 53.0 km/h approaches an intersection while the traffic light turns yellow. She knows that the yellow light lasts only 2s before turning to red, and she is 30 m away from the near side of the intersection. Must she try to stop, or should she make a run for it? The intersection is 15 m wide. Her car's maximum deceleration is -6.2 m/s2, whereas it can accelerate from 53km/h to 70km/h in 5.10 s. overlook the length of her car and her reaction time.
If she hits the brakes, how far would she travel before stopping?
If she hits the gas in its place, how far would she travel before the light turns red?