A green car is trailing a yellow car in an adjacent lane while moving down a highway at a constant speed of 75.1 mi/hr. The separation distance between the two cars is 35.8 ft. The yellow car slams on the brakes and decelerates at a rate of -8.82 m/s/s. After a reaction of time of 0.330 seconds, the green car begins decelerating at a rate of -8.57 m/s/s. What is the final separation distance (in m) between the cars once stopped? (Given: 1 m/s = 2.24 mi/hr; 3.28 ft = 1 m)
Enter the answer as a positive value (no - values).
and
A train normally travels with a uniform speed of 93.0 km/hr along a stretch of straight, level track from point A to point B, past a depot that lies in between. One particular day, the train makes a 3.53-minute stop at the depot. If the train decelerates at a rate of -1.34 m/s/s from point A to stop at the depot and then accelerates at a rate of 0.81 m/s/s back to point B, then how much total time (in minutes) is lost by the train in making the stop. Consider the decelerating time, the rest time, and the accelerating time compared to the straight-through A to B time.