## Question:

The bus B has weight ${ W }_{ B }$ and is traveling to the right at speed ${ v }_{ B }$. Meanwhile car A of weight ${ W }_{ A }$ is traveling at speed ${ v }_{ A }$ to the left. If the vehicles crash head-on and become entangled, determine their common velocity just after the collision. Assume that the vehicles are free to roll during collision.Given: ${ W }_{ B }$ = 15000 lb , ${ v }_{ B }$ = 5 ft/s , ${ W }_{ A }$ = 3000 lb , ${ v }_{ A }$ = 4 ft/s , g = ${ 32.2ft/s }^{ 2 }$