Question: The three air carts shown in FIGURE 9-44 have masses, reading from left to right, of m, 2m, and 4m, respectively. Initially, the cart on

The three air carts shown in FIGURE 9-44 have masses, reading from left to right, of m, 2m, and 4m, respectively. Initially, the cart on the right is at rest, whereas the other two carts are moving to the right with a speed v0. All carts are equipped with putty bumpers that give completely inelastic collisions.

(a) Find the final speed of the carts.

(b) Calculate the ratio of the final kinetic energy of the system to the initial kinetic energy.

vo 4m 2m

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