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Two carts of mass ma and mb are on an airtrack (so that uk=0) inclined at...

Two carts of mass ma and mb are on an airtrack (so that uk=0) inclined at an angle theta and moving toward each other at speeds vai and vbi when they are a distance xo apart. Immediately after they collide, cart b is observed to be moving down the track at speed vbf. Write an expression for vaf immediately after the collision. As a simple test of your expression, check if ma=mb then delta va=-delta vb.
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