Answer: 44.9 m/s
Step-by-step explanation:
Velocity = displacement/time
While displacement is the distance travelled in a specific direction.
The east direction will be positive while the west direction will be negative.
The total displacement will be :
120 + 90 - 8 = 202 miles
While the total time will be:
2 + 1.5 + 1 = 4.5 hours
Half hour time he used in the gas station will not be considered.
Average Velocity = total displacement ÷ total time.
Average velocity = 202/4.5
Average velocity = 44.89 m/s
Average velocity through out the entire time is 44.9 m/s