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a bird flying horizontally acidently drops a rock it was carrying. 2.10 s later, the rocks...

a bird flying horizontally acidently drops a rock it was carrying. 2.10 s later, the rocks velocity is 22.2 m/s in a -68.2 direction. what was the birds (and rocks) initial velocity?

(unit =m/s)

(Hint: the rock was originally moving with the bird)

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