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## Conservation Of momentum In two Dimensions Ranking Task

The figures below show bird’s-eye see of six vehicle crashes an instant before they occur. The automobiles have various masses and incoming velocities asshown. After impact, the automobiles remain joined together and skid to rest in the direction shown by vfinal. Rank these crashes according tothe angle θ , measure counterclockwise as shown, at which the wreckage initially skids.

### Concepts and reason

The required principles to fix the problem are collision and also momentum conservation.

First use the inert conservation to discover a general equation for angle made by the automobiles ~ collision.

Then rank, from largest to smallest, the crashes follow to the edge measured counterclockwise.

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### Ans:

The ranking that the crashes from largest to smallest is,

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