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MHT CET 2021 (21 Sep, Shift 2) · Kinetic Energy & Momentum

Kinetic Energy & Momentum question from MHT CET 2021 (21 Sep, Shift 2)

Q15MHT CET 2021 · 21 SEP · SHIFT 2Easy

Kinetic Energy & Momentum

Three bodies P, Q and R have masses 'm' kg, '2m' kg and '3m' kg respectively. If all the bodies have equal kinetic energy, then greater momentum will be for body/bodies.

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Answer: (b)

Equal KE: $p = \sqrt{2mK} \propto \sqrt{m}$ .
R has the largest mass $3m$ , so it has the greatest momentum. The answer is (b) R.

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