Directions: Assume, unless otherwise specified, that all numbers have at least 3 signicant gures. Students collect data, see graph, for the force involved in stretching a rubber band. The data is well t by the equation F = 33.65 X04971, where F is in newtons and x is in meters. One end of the rubber band is attached to a stationary vertical rod and the other end to a 0.3 kg mass. The mass rests on a frictionless horizontal surface. The mass is pulled back such that the rubber band is stretched by 0.8 m from its unstretched length and then released from rest. A. What is the speed of the mass after it has traveled 0.4 m? B. What is the maximum speed of the object