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A 30.0 ball of clay traveling east at 5.00 collides and sticks together with a 20.0 ball of clay...

A 30.0 ball of clay traveling east at 5.00 collides and sticks together with a 20.0 ball of clay traveling north at 2.00 .
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velocity of the combination = (30*5 i + 20*2 j)/(50) = (3i+0.8j)
so magnitude of the velocity= (3^2+ .8^2)= 3.1m/s
direction =tan inverse(.8/3) = 14.9 degrees from east towards north
answered by: soliman
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