Two carts of masses m1 = 2.219 kgand m2 = 8.479 kg undergo an elastic collision. Before the collision, while the second cart is stationary, the velocity of the first cart is v1 = 5.519. If the final velocity (after collision) of the second cart is v'2 = 1.498 m/s, the final velocity (m/s) of the first cart is:

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