Calculating Post-Collision Speed and Initial Speed of Two Cars at Intersection

[physicsjessic]

Homework Statement

Two cars collide at an intersection. car A with a mass of 2000 kg is going from west to east while car B of mass 1500 kg is going from north to south at 15 m/s. As a result of collision the two cas move together as one after. The cars now move at an angle 65 degrees south of east from point of impact.
How fast are the cars moving after collision?
How fast was car A going just before the collision?

Homework Equations

conservation of momemtum

The Attempt at a Solution

P intail= P final

 

[tiny-tim]

Hi physicsjessic!

Homework Equations

conservation of momemtum

Yes, that's the right technique …

what do you get? ​