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I am preparing for my exam and i am stuck with this problem, please help me out.

It wont take too long, I hope.

1. The problem statement, all variables and given/known data

Two bodies A and B have masses mA and mB respectively and collide completely inelastic.

Given that the mass of body A is 1200 kg and body B is 800 kg determine the avergage force vectors acting on each body during the collision. The collision itself lasts for 0.2 s.

2. Relevant equations

Velocity of body A: (5i + 3j) m/s

Velocity of body B: (-i + 4j) m/s

Common velocity after collision I found to be: (2.6i + 3.4j) m/s (this eq was derived in a previous question with mA = 3/2 mB)

3. The attempt at a solution

Well, I have tried using the momentum impulse theorem only to find out that the total momentum was conserved, which is good indeed. However I dont know how to find the answer I have kind of like used up my knowledge on impulse.

The answer is (-14400i + 2400j) N.

I have no clue how this answer was derived.

Please help.

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# Homework Help: Momentum/Impulse force vectors

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