Two children of equal mass are driving identical bumper cars at the Boardwalk in Santa Cruz. The two are both moving in the +x direction when car A hits car B from the rear. They bounce off of each other in an elastic collision. The initial speed of car A is 7.02 m/s, while the initial speed of car B is 4.91 m/s. Note that the motion in this problem is strictly 1-dimensional. a) What is the final velocity, in meters per second, of bumper

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