Answer:
my average speed = 4 miles per hour (4 mph)
Step-by-step explanation:
Extracting the key information from the question:
*** I went kayaking over a 2mile stretch of river.
*** I went 2 miles upstream
*** I also went 2 miles downstream back to origin.
*** I am only required to complete my average speed if the round trip took 1 hour.
The total distance that was covered in the round trip (my upstream and downstream journeys) is:
= 2 miles [upstream] + 2 miles [downstream].
= 4 miles for the round trip.
Again, we were informed that I spent 1 hour going upstream and downstream.
This means that the round trip time = 1 hour.
Average speed is simply = total distance covered/total time taken
Here, total distance covered = 4 miles.
Total time taken = 1 hour
Average speed = 4 miles/1 hour = 4 miles per hour
