A buoy floating in the ocean is bobbing in simple harmonic motion with amplitude 7ft and period 8 seconds. Its displacement d from sea level at time t=0 seconds is 0 ft, and initially it moves upward. (Note that upward is the positive direction.)

Give the equation modeling the displacement d as a function of time t.

1 answer

several just like this have been done for you already, showing how to use the information to derive the function. What do you have so far?