Answer 16.5

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Current revision (16:38, 27 March 2011) (edit) (undo)
 
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<math>\frac{2}{3}</math> <math>\text{m}{{\text{s}}^{-1}}</math>, in the opposite direction as before the collision.
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<math>\frac{4}{3}</math> <math>\text{m}{{\text{s}}^{-1}}</math>, in the same direction as before the collision.

Current revision

\displaystyle \frac{4}{3} \displaystyle \text{m}{{\text{s}}^{-1}}, in the same direction as before the collision.