Answer:
4. 12 km.
5. 2 km.
Step-by-step explanation:
Hello!
In this case, we need to distinguish between two terms:
- Distance traveled: it stands for the total displacement, no matter the initial and final position the body has; it means that the total displacement was:
DT = 3km + 4 km + 3 km + 2 km = 12 km.
- Displacement: it stands for the relationship between the initial position and the final one, it means that the initial position was 0 km and the final one is 2 km away, thus, the displacement is:
D = 2km - 0 km = 2 km.
Best regards!