Final answer:
The average speed is 6 km/h.
Step-by-step explanation:
To calculate the average speed, we divide the distance traveled by the time taken:
Speed = Distance / Time
Given that the man covered a distance of 150m in 1.5 minutes, we can convert minutes to hours by dividing by 60:
Time in hours = 1.5 minutes / 60
Time in hours = 0.025 hours
So, the average speed = 150m / 0.025 hours = 6000m/h
To convert this to km/h, we divide by 1000:
Average speed = 6000m/h / 1000 = 6 km/h
Therefore, the correct answer is (E) 6 km/h.