A body A of mass m is moving | Gravitation | JEE MAIN 2020

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JEE MAIN 2020

09-01-20 S1

Question

A body A of mass m is moving in a circular orbit of radius $R$ about a planet. Another body $B$ of mass $\frac{\mathrm{m}}{2}$ collides with $A$ with a velocity which is half $\left(\frac{\overrightarrow{\mathrm{v}}}{2}\right)$ the instantaneous velocity $\vec{v}$ of $A$. The collision is completely inelastic. Then the combined body

Select the correct option:

A

Escapes from the Planet’s Gravitational field

B

Continues to move in a circular orbit

C

Falls vertically downwards towards the planet

D

Starts moving in an elliptical orbit around the planet

✓ Correct! Well done.

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Solution

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