UNLESS OTHERWISE INSTRUCTED: ASSUME FRICTIONLESS, HORIZONTAL MOTION ASSUME ALL SPRINGS ARE INITIALLY AT THEIR RELAXED LENGTH A box of mass m = 40 kg is released from rest at the top of a frictionless ramp. The ramp makes an angle 0= 45" to the horizontal. After sliding from the origin a distance d = 2.00 m down the ramp, the box strikes a spring of force m k constant k = 500 N/m, as shown at right. The box compresses the spring, momentarily stops, and then begins to slide back up the ramp. 11) What is the maximum speed of the box