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A ball is thrown into the air from ground level. After a time t = 1.0 s, the ball has traveled to a position x1 = 29.0 m to the right of and y1 = 9.0 m up from where it was thrown (at this time, the x and y components of the ball's velocity are still positive). The axes show the x and y directions to be considered positive.

a) What was the y component of the initial velocity of the ball?

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