An object A of mass 4.00 kg traveling at 10.0 ms^-1 towards the East collides with an object B of mass 5.00 kg traveling towards the West at 12.0 ms^-1. After their collision A moves towards the South with a speed of 3.75 ms^-1.

(a) Draw a vector diagram that enables you to calculate the momentum of object B after the collision.

(b) Use your diagram or any other method to calculate the velocity of object B after the collision.

The contact time between the two objects during their collision is 0.30 s.

(c) Calculate the average force between the two objects during their collision.