A body of mass 2 kg moving| CENTRE OF MASS |JEE-MAIN 2021

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JEE-MAIN 2021

25-07-2021 S1

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A body of mass 2 kg moving with a speed of $4 \mathrm{~m} / \mathrm{s}$. makes an elastic collision with another body at rest and continues to move in the original direction but with one fourth of its initial speed. The speed of the two body centre of mass is $\frac{x}{10} \mathrm{~m} / \mathrm{s}$. Then the value of $x$ is

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