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Previous Page Next Page Page 8 of 12 Question 15 (5 points) The mass of red cart A is 4 kg. Cart A continues at a constant sp

Question 16 (5 points) The mass of red cart A is 4 kg. Carts A and C collide in a completely inelastic collision. The two car

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Answer #1

Solution :

Question (15) Solution :

Given :

mA = 4 kg

ViA = 3 m/s

ViC = 0 m/s

Total momentum of the system : Ptotal = PA + PC = (mA)(ViA) + (mC)(ViC) = (4 kg)(3 m/s) + (mC)(0 m/s) = 12 kg m/s

Question (16) Solution :

Given :

mA = 4 kg

ViA = 3 m/s

ViC = 0 m/s

Vf = 1 m/s

Total momentum of the system : Pinitial = PA + PC = (mA)(ViA) + (mC)(ViC) = (4 kg)(3 m/s) + (mC)(0 m/s) = 12 kg m/s

Now According to Conservation of Momentum : Pfinal = Pinitial

Thus : (mA + mC)(Vf) = 12 kg m/s

(4 kg + mC)(1 m/s) = 12 kg m/s

4 kg + mC = 12 kg

mC = 8 kg

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