Fundamental Problem 14.16 The 9-lb collar is released from rest at A and travels along the frictionless guide. Part A Determine the speed of the collar when it strikes the stop B. The spring has an unstretched length of 0.7ft. (Figure 1) Express your answer with the appropriate units. Figure 1 ✓ of 1 > 1.5 ft k = 4 lb/ft B VB A Value ft/s Submit My Answers Give Up Try Again; 4 attempts remaining reset shortcuts?help