A point on the rim of a 0.30-m-radius rotating wheel has a tangential speed of 4.0 m/s. What is the tangential speed of a point 0.20 m from the center of the same wheel?
a. 1.0 m/s
b. 1.3 m/s
c. 2.7 m/s
d. 8.0 m/s
i have been trying to do this for hours now.somebody please help