Posted by sara on .
Betty Bodycheck (mB = 50.2 kg, vB = 22.0 km/h in the positive xdirection) and Sally Slasher (mS = 45.2 kg, vS = 28.0 km/h in the positive ydirection) are both racing to get to a hockey puck. Immediately after the collision, Betty is heading in a direction that is 76.0° counterclockwise from her original direction, and Sally is heading back and to her right in a direction that is 12.0° from the xaxis. What are their final kinetic energy?

physics 
drwls,
Total or separately?
Write the two equations of conservation of momentum in x and y directions. Sinc e you know the final directions, you can solve for the two unkonwn speeds.
With the final speeds, you can compute the final kinetic energy of each person 
physics 
sara,
I did that but i am not getting the right answer

physics 
dave,
ok does anyone know how to do this i need step by step help on this