late condor
Hi! I'm not sure whether I did this right and my solution is correct.. Can anyone please verify?
Angular speed = 2Pi/24 = 0.26 rad/h
Arctic Circle radius = 1575 miles
What is the linear speed of an object in the Arctic Circle in mph?
2Pi rad 2Pi rad * 1575 miles
-------- * -------------- = 412.33 mph?
24 h 2Pi rad
sly goblet
no
the linear speed is given by the radius times the angular speed in this kind of situation
so you just multiply the two things
to understand: the angle goes from 0 to 2pi (one full circle) in 24h, based on the angular speed (= 2pi/24), so in 24h it travels 2*pi*1575 miles around (length of the circle), so you just divide this length by 24h to get the result in mph
late condor
I see! So the correct answer would be: 412.125 mph?