Two billiard balls of equal mass move at right angles and meet at the origin of a xy coordinate system. Ball A is moving upward along the y axis at vAvAv_A = 2.3 m/s, and ball B is moving to the right along the x axis with speed vB= 5.5 m/s. After the collision, assumed elastic, ball B is moving along the positive yy axis a)What is the final direction of ball A? b) What are their two speeds?

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