As you walk to physics class, you start out at a speed of 2 m/s, for a time of 120 seconds (you're really excited to get to class). Then you see your friend and slow down to a speed of 0.5m/s for 30 seconds.
You stop at your locker for 40 seconds (a speed of 0 m/s). You realize that you are about to be late so
you hurry to class at a speed of 1 m/s and get to class just as the bell rings (4 minutes after your trip
started). How far did you travel total?