The graph represents the position of a cart as a function of time. What is the average velocity at 5-7 seconds?

Position vs. Time Position (m) 0 2 3 4 5 6 7 Time (s)\fB A 50 H 200 N Fnet = ON 1. What is the magnitude of force A, if the object is moving with constant horizontal velocity? [ Select ] 2. What is the magnitude of force B if the object is moving with a constant horizontal velocity? [ Select ]Linear Momentum Kinetic Energy (A) conserved conserved B conserved not conserved C) not conserved conserved D) not conserved not conservedMachine Work (J) Time(s) I II III 2 IV 0.5