At the center of a 50-m-diameter circular ice rink a 78kg, Ask an Expert

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At the center of a 50-m-diameter circular ice rink, a 78kg skater traveling north at 2.8m/s collides with and holds onto a 61kg skater who had been heading west at 3.4m/s .

How long will it take them to glide to the edge of the rink? (I got 1.96078s, which was Wrong)

Where will they reach it? Give your answer as an angle north of west. ( I tried using tangent, but is it archtan?)

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