7. Stations A and B are d meters apart, with station C exactly in the middle (d/2). A car goes from station A to station C at a speed of v1. From station C, it then proceeds to station B at constant speed of v2.
a. Determine the total time t, for the trip. (Express your answer in terms of v1, v2 and d)
b. What is the total distance traveled for the entire trip? (Express your answers in terms of d)
c. What is the displacement for the entire trip?
d. What is the average speed of the car for the entire trip? (Express your answer in terms of v1 and v2 only)
e. What is the average velocity of the car for the entire trip?
(a) time = distance/speed, so (d/2)/v1 + (d/2)/v2
(b) and (c) should be obvious.
(d) totaldistance/totaltime = d/(a)
(e) = (d) in the direction of A→B