circumference = 2 pi r
= 2 pi (640,0000)
time = 80 d * 24 h/d * 3600 seconds/h
so
speed = circumference / time
Szymon and Chris fly their balloon around the earth in 80 days. Taking the radius of the earth to be 6400 km, calculate their average speed in m/s.
I did answered all the homework questions but I didn't know how to do this one?
1 answer