*please use g=9.80 m/s² for each and round to the appropriate number of significant digits.

1. Two objects, one of mass 1.68 kg and the other of 2.52 kg are involved in a collision. The object of mass 1.68 kg has speed of 3.75 m/s before the collision. The object of mass 2.52 kg has speed of 1.25 m/s before the collision.

a) Calculate the two final velocities if before the collision the 1.68 kg object was travelling east, the 2.52 kg object was travelling west, and the collision was inelastic.

b) Calculate the two final velocities if before the collision the 1.68 kg object was travelling west, the 2.52 kg object was travelling east, and the collision was elastic.

c) Calculate the two final velocities if before the collision the 1.68 kg object was travelling at a direction of 22.0 degrees N of E, the 2.52 kg object was travelling at a direction of 32.0 degrees W of N, and the collision was inelastic.