An object is attached to a coiled spring. The object is pulled down (negative direction from the rest position) and then released. Write an equation for the distance of the object from its rest position after t seconds.amplitude = 9 cm; period = 3 seconds
A. d = -9 sin 
?t
B. d = -9 cos 
?t
C. d = -3 cos 
?t
D. d = -9 cos 
t
Answer: B
Mathematics
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?
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