I need help with this two questions please

Submit Answer MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A mass on a spring vibrates horizontally on a smooth, level surface as shown in the figure. Its equation of motion is [-/1 Points] DETAILS SCALCCC5 3.3.037. x(t) = 8 sin(t), where t is measured in seconds and x in centimeters. Y NOTES ASK YOUR TEACHER PRACTICE ANOTHER Equilibrium Suppose f = 5 and f' = -3. Let g(x) = f(x) sin(x) and h(x) = cos(x) Find the following. f ( x ) position (a) g' O ( b ) h (a) Find the velocity and acceleration at time t. v (t ) = a(t) = Need Help? Read It (b) Find the position, velocity, and acceleration of the mass at time t = 21/3. Submit Answer [-/0.42 Points] DETAILS SCALCCC5 3.3.042.MI. Y NOTES ASK YOUR TEACHER PRACTICE ANOTHER