A 0.9-kg block B is connected by a cord to a 1.6−kg block A that is suspended as shown from two springs, each with a constant of k = 180 N/m, and a dashpot with a damping coefficient of c = 60 N⋅s/m. Knowing that the system is at rest when the cord connecting A and B is cut, determine the velocity of block A after 0.1 s. The velocity of block A after 0.1 s is mm/s.