A body A of mass m is moving in a circular orbit of radius R about a planet. Another body B of mass 2m collides with A with a velocity which is half (2v) the instantaneous velocity v of A. The collision is completely inelastic. Then, the combined body: [Main 9 Jan. 2020 I]
(1) continues to move in a circular orbit
(2) Escapes from the Planet's Gravitational field
(3) Falls vertically downwards towards the planet
(4) starts moving in an elliptical orbit around the planet