SOLUTION: A marker buoy off the coast of Washington bobs up and down with the waves. The distance between the highest and lowest point is 6 feet. The buoy moves from its highest point to its

Question 1040604: A marker buoy off the coast of Washington bobs up and down with the waves. The distance between the highest and lowest point is 6 feet. The buoy moves from its highest point to its lowest point and back to its highest point every 8 seconds. Which of the following equations represents the motion of the buoy if it is at equilibrium when t = 0 and it is moving up from the normal water level.
It must be one of these four equations: https://i.imgsafe.org/2ae1de4973.png
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
The amplitude is 3 feet, so choices A and B are possible.
The period is 8 seconds, so t*2pi/8=2pi*t/4
It is increasing in the first quadrant when t begins.
B is the right equation.
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