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Paragraph: A subatomic particle X sponta...

Paragraph: A subatomic particle X spontaneously decays into two particles, A and B, each of rest energy `1.40xx10^(2)`MeV. The particles fly off in opposite directions, each with speed 0.827c relative to an inertial reference frame S.
Which one of the following statements concerning particle X is true?

A

Momentum conservation requires that it was moving in frame S.

B

Energy conservation requires that it must have been at rest in frame S.

C

Momentum conservation requires that it must have been at rest in frame S.

D

Energy conservation requires that its total energy was 280 MeV in frame S.

Text Solution

Verified by Experts

The correct Answer is:
C
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