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Introductory Physics Homework Help
Elastic collision problem (μk) is the target variable
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[QUOTE="tnich, post: 6006665, member: 639870"] The problem states that the collision is elastic. That means that no energy is lost in the collision, so energy is conserved. The mass A is not necessarily at rest after the collision, but you can use conservation of energy and conservation of momentum to figure out what its velocity is. In this case, your two wrong assumptions canceled out and you got the right answer anyway. All of A's momentum is transferred to B. That will not happen if the two masses are different or if collision is not head on. I don't understand what "W other" means, or how you are trying to use it in an energy equation. Energy is lost to friction as B slides to a stop, so you could equate the work the block does against friction to its initial kinetic energy and solve for d. [/QUOTE]
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Elastic collision problem (μk) is the target variable
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