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 = -3 sin (3t)
A. simple harmonic; 3 m; 
? sec; 
oscillations/sec
B. simple harmonic; -3 m; 3 ? sec; 
oscillations/sec
C. simple harmonic; 3 m; 
sec; 
? oscillations/sec
D. simple harmonic; -3 m; 
? sec; 
oscillations/sec
Answer: A
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