alleryIn a collision with no external force, what stays unchanged?
ATotal manoeuvre
BTotal movement
CTotal momentum
DTotal magnitude
Answer & Solution
Correct answer: C. Total momentum
1. The momentum before equals the momentum after.
2. This holds only if no outside force acts.
3. The total momentum is conserved.
_Source: syllabus Science, Ch 9 'Force and Laws of Motion'_
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