"We gain strength, and courage, and confidence by each experience in which we really stop to look fear in the face...we must do that which we think we cannot." - Eleanor Roosevelt
one rotation is ten seconds and it travels 500 feet
so you would take 500 times 6 because it takes six rotations for one full minute. Now you have 3,000 but it wants to know 2 minuts so the answer is 6,000