Physics
posted by Angel .
A propeller spins at 1880 rev/min.
the equals 197 rads/sec
b. What is the angular displacement of the propeller in 2.50 s ?

If you have angular velocity and you need angular displacement, just remember:
velocity=displacement/time
so solve that for displacement and it's
displacement=velocity*time
so it should be
angular displacement=(197 rad/s)(2.5 s)
and your answer should be 492.5 rad, be careful of whether the answer is supposed to be in degrees or radians
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