A 6.0-kg object moving in the + x direction at 6.5 m/s collides head-on with an 8.0-kg object moving in the - x direction at 4.0 m/s. Determine the final velocity of each object if:

(a) The objects stick together;

(b) The collision is elastic;

(c) The 6.0-kg object is at rest after the collision;

(d) The 8.0-kg object is at rest after the collision;

(e) The 6.0-kg object has a velocity of 4.0 m/s in the - x direction after the collision. Finally,

(f) Are the results in (c), (d), and (e) "reasonable"? Explain