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From conservation law of momentum, before collision and after collision linear momentum (p) will be same. That is, initial momentum = final momentum. What is the relation between p1 and p2?

1. p1 = p2
2. p1 > p2
3. p1 < p2
4. p1 ≠ p2

Correct answer: p1 = p2

Solution

According to the law of conservation of linear momentum, the total momentum of a system remains constant if no external force acts on it. Hence, p1 = p2.

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