v PartA Find the final speed of the carts. The three air carts shown in the figuretgure 1) have masses. reading from left to right, of m, 2m. and 4m, respectively. Express your answer in terms 01' some or all of the varlables v\" and m. Initially. the cart on the right is at rest. whereas the other two carts are moving to the right with a speed on. All carts are U _ E1.) equipped with putty bumpers that give completely inelastic f _ 7 0 collisions. Previous Ari swers Completed V Part B Calculate the ratio of the final kinetic energy of the system to the initial kinetic energy. Express your answer using three slgnltleant figures. Figure 1 of 1 7 K1 K.- = Part A IP Consider the four masses shown in the figure(Figure 1). Find the total gravitational potential energy of this system. Express your answer using two significant figures. VO AEd ? Utotal = Submit Request Answer Figure Part B