A driver is traveling at 72 km/hr when she sees a red light in the distance. She keeps traveling at this speed for two seconds, and then applies the brakes, decelerating the car to a stop at a rate of -5 m/s2.
1. Convert the driver's initial speed into units of m/s.
2. Compute her total stopping time, measured from the point where she first notices the red light.
3. Calculate her total stopping distance, gauged from the point where she first notices the red light.
4. Compute her average speed, measured from the point where she first notices the red light to the point when her car comes to a stop.