Question

Two cars collided at an intersection. Their frames became enmeshed and then they moved together as one object.

As an accident investigator on the scene, you were able to determine that car A, of mass 1900 kg, was initially traveling eastwards. You found that car B, of mass 1700 kg, had an onboard computer that registered its southwards velocity of 20 m/s. The tire skid marks on the pavement show that they both moved −25° south of east.

You are needed to determine the following information. Please round your calculations to 4 significant figures.

1.)   Their velocity in the y direction after the collision or vfy: m/s.

2.) The magnitude of their total velocity after collision or vf: m/s.

3.) Their velocity in the x direction after the collision or vfx: m/s.

4.) Car A's initial velocity before collision or viAx: m/s.

5.) As the posted speed limit for both roads is 30 mph, were either car speeding before the collision? Respond with car A, car B, both or neither: .

Answer 1