Question: A projectile of mass m = 10 kg traveling with the velocity v = 50 m/s strikes and becomes embedded in a massless board supported by a spring of stiffness k =.6.4 x 104 N/m in parallel with a dashpot with the coefficient of viscous damping c = 400 Ns/m (Fig.). Determine the time required for the board to reach the maximum displacement and the value of the maximum displacement.