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 = 2.3 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 y-axis.   a) What is the final direction of ball A? b)What are their two speeds?

Principles of Physics: A Calculus-Based Text
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ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
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Chapter8: Momentum And Collisions
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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 = 2.3 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 y-axis.

 

a) What is the final direction of ball A?

b)What are their two speeds?

 
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