If two particles have equal kinetic energies, are their momenta equal?
A、yes,always;
B、no,never;
C、yes,aslongastheirmassesareequal;
D、yes,ifboththeirmassesanddirectionsofmotionarethesame
发布时间：2025-12-19 18:04:47
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答案：yes, if both their masses and directions of motion are the same
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