A buoy oscillates in simple harmonic motion y = Acosωt as waves move past it. The buoy moves a total of 16.5 feet (vertically) between its low point and its high point. It returns to its high point every 10 seconds. Determine the velocity of the buoy as a function of t. v = −8.25πsinπ 10t v = 8.25πsinπ 5t v = −1.65πsinπ 5t v = −1.65πsinπ 10t v = 1.65πsinπ 5t