Final answer:
The average speed of a motorist traveling from Lagos to Ibadan over a 145km distance in 2 hours and 15 minutes is 64.44 km/h or 17.9 m/s after converting time into hours and performing unit conversions for the speed in meters per second.
Step-by-step explanation:
To calculate the average speed of a motorist traveling from Lagos to Ibadan, covering a distance of 145km in 2 hours and 15 minutes, we first need to convert the time into a single unit. Since 1 hour is equal to 60 minutes, 2 hours 15 minutes is the same as 2.25 hours (2 hours + 15 minutes/60).
Now we can compute the average speed using the formula:
Average speed = Total distance / Total time
For this trip:
Average speed = 145 km / 2.25 h = 64.44 km/h
To convert this to meters per second, we consider that 1 km is 1000 meters, and 1 hour is 3600 seconds.
Averege speed in m/s = (64.44 km/h * 1000 m/km) / 3600 s/h = 17.9 m/s
The average speed of the motorist for the trip is 64.44 km/h or 17.9 m/s.