A 16.5 kg object moving in the + x direction at 6.0 m/s collides head-on with a

Question

A 16.5 kg object moving in the + x direction at 6.0 m/s collides head-on with a 11.5 kg object moving in the - x direction at 5.0 m/s.
A.Find the final velocity of each mass if the objects stick together.
B.Find the final velocity of each mass if the collision is elastic.
C.Find the final velocity of each mass if the 16.5 object is at rest after the collision
D.Is the result in part C "reasonable"? Explain.
E.Find the final velocity of each mass if the 11.5 object is at rest after the collision.
F.Is the result in part E "reasonable"? Explain.
G.Find the final velocity of each mass if the 16.5 object has a velocity of 5.0 m/s in the -x direction after the collision.
H.Is the result in part G "reasonable"? Explain

A, B, C, E, G have two answers.

Explanation / Answer

a)16.5*6 - 11.5*5 = 28v v = 1.48m/s positive x b)

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