For an isolated system of particles, the conserved quantity is:
AMomentum
BPosition
CVelocity
DDistance
Answer & Solution
Correct answer: A. Momentum
1. No external force acts on an isolated system.
2. Its total is therefore unchanged over time.
3. That conserved quantity is the total momentum.
_Source: NCERT Class 11 Physics Part I, Chapter 5, Laws of Motion._
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