You use the formulas that use the information you are given!
If you are given an "angular velocity" or an "radius", R, then you use v= Rw. If you are given an actual length and time, then you use v= S/T.
#3
banglajihwan
4
0
the equation v = R*w shows that when you have a simple rotating object, and when w is constant (not changing), the linear velocity of the object (v) increases as you go further away from the origin (as R increases). As R increases, the object has to travel more but w is the same, so v must increase also.