For an interaction of two particles in two dimensions, which of the following is

Question

For an interaction of two particles in two dimensions, which of the following is true? >The sum of the magnitudes of the momenta of the particles before and after the interaction is the same. >The sum of the x-components of the momenta of the two particles before and after the interactions is the same. >If the sum of the x-components and the sum of the y-components of the two particles before the interaction are both zero, then the sum of the magnitudes of the momenta after the interaction is also zero. >If the sum of the y-components before the interaction is nonzero, then the sum of the y-components of the momenta after the interaction cannot be zero?

Explanation / Answer

he sum of the magnitudes of the momenta of the particles before and after the interaction is the same

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