Two billiard balls of equal mass move at right angles and meet at the origin of an xy coordinate system. Ball A is moving upward along the y axis at Va = 2.5 m/s and ball B is moving to the right along the x axis with speed Vb= 3.9 m/s. After the collision, assumed elastic, ball B is moving along the positive y axis ( Figure 1). What is the final direction of ball A? Express your answer using two significant figures. Answer should be in degrees.  0 = ________ degrees clockwise from the +y direction

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