Concept Simulation $10\mathrm{.}3$ illustrates the concepts pertinent to this problem. A $0\mathrm{.}91-$kg object is attached to one end of a spring, as in the first drawing, and the system is set into simple harmonic motion. The displacement $x$ of the object as a function of time is shown in the second drawing. With the aid of these data, determine $($a$)$ the amplitude $A$ of the motion, $($b$)$ the angular frequency $,($c$)$ the spring constant $k,($d$)$ the speed of the object at $t=1\mathrm{.}0s,$ and $($e$)$ the magnitude of the object's acceleration at $t=1\mathrm{.}0s.$