Answer:
C. 6.2 m/s
Step-by-step explanation:
The magnitude of the distances are
East direction
| d1 | = 80 m
West direction
| d2 | =75m
Total magnitude of distance = 80 + 75 = 155
Total time taken = 5 + 20 = 25 s
Magnitude of speed = 155/25 = 6.2 m/s