How fast was the boy moving right before the collision

Reference no: EM13336307

An 80 kg man is ice skating due north and happens to collide with a 20 kg boy who is skating due east. Immediately after the collision, the man and the boy are sliding together at 2.5 m/s in a direction 60? North of East. How fast was the boy moving right before the collision? (You can assume there is no friction here).

Reference no: EM13336307

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