. Balls m1 = 4.00 kg and m2 = 2.50 kg collide elastically, as shown in the figure below. After the collision, m1 is travelling to the left with a speed of 1.80 m/s and m2 is travelling to the right with a speed of 2.30 m/s. Calculate the velocities of m1 and m2 before the collision.
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