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JEE Mains · Physics · STD 11 - Work,energy,power and collision
  • JEE Mains 2019
  • Medium
  • MCQ

A satellite of mass \(M\) is in a circular orbit of radius \(R\) about the centre of the earth. A meteorite of the same mass, falling towards the earth collides with the satellite completely inelastically. The speeds of the satellite and the meteorite are the same, just before the collision. The subsequent motion of the combined body will be

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Answer & Solution

Correct Answer

(B) in an elliptical orbit

Step-by-step Solution

Detailed explanation

\(\begin{array}{l}
2m{v_x} = mv\\
 \Rightarrow \,{v_x} = \frac{v}{2}\\
\,\,\,\,\,\,{v_y} = \frac{v}{2}\\
{v_{net}} = \sqrt {{v_{{x^2}}} + {v_{{y^2}}}}  = \frac{v}{{\sqrt 2 }}
\end{array}\)

So, path will be elliptical.