I don't understand what I did wrong with part b and need help with the rest of the problems

A 0.520-kg object attached to a spring with a force constant of 8.00 N/m vibrates in simple harmonic motion with an amplitude of 10.6 cm. (Assume the position of the object is at the origin a (a) Calculate the maximum value of its speed. 41.55 y cm/s ,(bLCalcuLate the maximum value of its acceleration. 127.7] gx - equation for x(t) and then think about how to nd the acceleration as a function of time from this equation. cm/s2 (c) Calculate the value of its speed when the object is 6.60 cm from the equilibrium position. cm/s (d) Calculate the value of its acceleration when the object is 6.60 cm from the equilibrium position. cm/s2 (e) Calculate the time interval required for the object to move from x = 0 to x = 4.60 cm. s