The displacement d (in meters) of an object at time t (in seconds) is given. Describe the motion of the object. What is the maximum displacement from its resting position, the time required for one oscillation, and the frequency?d = 8 - 5 cos (?t)
A. simple harmonic; 5 m; 2 sec; 
oscillation/sec
B. simple harmonic; -5 m; 2 sec; 
oscillation/sec
C. simple harmonic; 8 m; 2 sec; 
oscillation/sec
D. simple harmonic; 5 m; 
sec; 2 oscillations/sec
Answer: A
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