To measure the speed of a current, scientists place a paddle wheel in the stream and observe the rate at which it rotates. if the paddle wheel has radius 0.20m and rotates at 100rpm, find the speed of the current in m/s.

In your question that ask to find the speed of the current in meters per second where as the paddle wheel's radius is 0.2m and rotates at 100rpm. In your question, the acceleration could be, based on my calculation, the acceleration is V= 2.0994 m/s