A 1.5 kg mass compresses a spring with a spring constant of 1200 N/ m by a distance of 0.95 m. The spring releases and launches the mass on to a friction floor. On the floor is a 5 m long mat with a coefficient of kinetic friction 0.5. What is the final velocity of the mass after it passes the friction mat?
A. 51.6 m/s
B 32.5 m/s
C. 90.8 m/s
D. 26.1 m/s
E. 17.7 m/s