An Object Is Attached to a Coiled Spring $d = 3 \cos 5 \pi t$

Multiple Choice

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.
- $d = 3 \cos 5 \pi t$ meters

A) displacement $= 3$ meters; period $= \frac { 2 } { 5 }$ seconds; $\mathrm { f } = \frac { 5 } { 2 }$ oscillations/second
B) displacement $= 3$ meters; period $= \frac { 5 } { 2 }$ seconds; $\mathrm { f } = \frac { 2 } { 5 }$ oscillations/second
C) displacement $= 3$ meters; period $= \frac { 2 } { 5 } \pi$ seconds; $\mathrm { f } = \frac { 5 } { 2 \pi }$ oscillations/second
D) displacement $= - 3$ meters; period $= \frac { 5 } { 2 }$ seconds; $\mathrm { f } = \frac { 2 } { 5 }$ oscillations/second