A ceiling fan starts from rest and experiences a constant angular acceleration of +0.40rad/s2. Counterclockwise is defined as the positive direction. How many complete revolutions has the fan made after 10s?
a) Approximately 3.2 revolutions clockwise
b) Approximately 6.4 revolutions counterclockwise
c) Approximately 3.2 revolutions counterclockwise
d) Approximately 0.64 revolutions counterclockwise