# physics

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why is the total distance traveled by a mass traveling in a circle of radius R during n revolutions =2piRn. The average speed is the distance traveled divided by the elapsed time, so:

v=2piRn/delta T, where delta T is the elapsed time.

• physics -

Why?
the distance around the circle once is 2PI*radius. If one goes n times around, then total distance is 2PI*radius*n

and of course, avgspeed is total distance/time.

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