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I don't need the answer I just want to know what type of problem this is...


I don't need the answer I just want to know what t
I don't need the answer I just want to know what type of problem this is and the physics behind it.
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Answer #1

main concept in this problem: " onedimensional collission [elastic collision]" and law of conservation of momentum.

and this problem is also solved by using the law of conservation of enrgy or work-energy theorem.

part (a) is calculated by using the law of conservation of momentum

and

part (b) is calculated by using the work-energy theorem.

law of conservation of momentum for this case:

m1u1+m2u2 = [m1+m2]v

work energy theorem:

total work done by friction = change in kinetic energy

  

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