Calculating Velocity After Car-Truck Collision

[IDKPhysics101]

A 568.6 kg car travels with a velocity the positive horizontal direction. A 997.8 kg truck travels at 11.5 m/s in the positive vertical direction. The two cars collide and both travel at an angle of 63.1 degrees above the positive x-axis at the same velocity. What is the original velocity (in m/s) of the car before it hits the truck?

If some one can give me a hint to start it that would be awesome!

 

[Sidnv]

Resolve the final momentum of the car and truck into horizontal and vertical components and then use conservation of momentum for both the vertical direction and the horizontal direction.