A spring in a pinball machine is compressed 0.5m from its equilibrium position It is released and it fires the 0.1 ke pinballat a velocity of 16m/s into play. No energy is lost to friction and all of the energy in the spring is transferred to the pinball. What is the spring constant in the spring? Solution: A. 40 N/m B. 80 N/m C. 20 N/m D. 25 N/n E. 60 N/m