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Per NCERT §5.11 (Points 9), during the collision interval itself, conservation of momentum holds at which moments?
AOnly for elastic ones
BEvery instant of the collision
COnly after the collision ends
DOnly before contact starts
Answer & Solution
Correct answer: B. Every instant of the collision
NCERT §5.11 Points 9: p_total is conserved at each instant. KE conservation (elastic case) only meaningful after collision.
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