Physicshard · Past Paper
What is the relationship between momentum (p) and kinetic energy (K)?
AK = p/2m
BK = p^2/2m
CK = 2mp
DK = p^2/m
✓ Correct Answer: B — K = p^2/2m
Since p = mv and K = 1/2 mv^2, substituting v = p/m gives K = 1/2 m(p/m)^2 = p^2/2m.
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