Acircular test track for cars has a circumference of 4.7 km. a car travels around the track from the southernmost point to the northernmost point. what distance does the car travel? what is the car's displacement from its original position?

Well, for the distance traveled, the car goes from the northernmost point to the southernmost point. So, it travels half of the circle's circumference = 4.7/2 = 2.35 km.

For the displacement, by going from the northernmost point to the southernmost point, the car basically just travels the diameter of circle.

So, using the formula: Circumference = 2πr = πd

Hence, the d = C/π = 4.7/π = 1.49605... = 1.5 km (2 significant figures)
Therefore, displacement = 1.5 km