Questions
Conservation of momentum in a collision between particles can be understood from
detailed solution
Correct option is D
We know that for a system, Fext = dpdt (from Newton's second law)If Fext = 0, dp = 0 ⇒ p = constantHence, momentum of a system will remain conserved, if external force on the system is zero.In case of collision between particles equal and opposite forces will act on individual particles by Newton's third law.Hence, total force on the system will be zero.Note We should not confuse with system and individualparticles. As total force on the system of both particles is zero, butforce acts on individual particles.Talk to our academic expert!
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In the figure given the position-time graph of a particle of mass 0.1 kg is shown. The impulse at t = 2 s is :
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