A 1140 kg car skidding due north on a level frictionless icy road at 178.56 km/h collides with a 1653 kg car skidding due east at 124 km/h in such a way that the two cars stick together.

Question

At what angle (−180� � � � +180�) East
of North do the two coupled cars skid off at?
Answer in units of �.

Answer 1

Add the two momentum vectors.
The resultant vector will have the direction of the coupled cars.