The problem statement, all variables and given/known data A mass of 1.11 kg on a spring rests on a frictionless surface and has a horizontal force of magnitude 1.23 N applied to it to keep it 1.3 m from the equilibrium. The mass undergoes simple harmonic motion when released. What is the maximum speed? What is the maximum magnitude of acceleration? What is the magnitude of acceleration of the mass when it's displacement is one fifth of the maximum value? The attempt at a solution From previous questions in the series, k = 0.946 f = 0.147 ω = (2)(pi)(0.147) My issue is that I don't know how to go about solving for maximum speed or maximum magnitude of acceleration. Any advice?