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Center of Mass question

2020 · 9 Jan · Shift 2 · Q55
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Center of Mass question

2020 · 9 Jan · Shift 2 · Q55

JEE MainPhysicsCenter of MassMCQ+4 / −1
A particle of mass m is projected with a speed u from the ground at an angle θ=π3\theta = {\pi \over 3}θ=3π​ w.r.t. horizontal (x-axis). When it has reached its maximum height, it collides completely inelastically with another particle of the same mass and velocity ui^u\widehat iui . The horizontal distance covered by the combined mass before reaching the ground is:
  1. A
    22u2g2\sqrt 2 {{{u^2}} \over g}22​gu2​
  2. B
    338u2g{{3\sqrt 3 } \over 8}{{{u^2}} \over g}833​​gu2​
  3. C
    324u2g{{3\sqrt 2 } \over 4}{{{u^2}} \over g}432​​gu2​
  4. D
    58u2g{5 \over 8}{{{u^2}} \over g}85​gu2​
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