23ya
a ball is thrown upwards from the surface of earth . while the ball is moving up,
(a) the earth remains stationary while the ball moves upwards
(b) the ball remains remain stationary while the earth moves downwards
(c) the ball and the earth both move towards each other
(d) the ball and the earth both move away from each other
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3 Answers
1(d) No external force is acting on the earth - ball system ....
So .. while the ball is moving up earth will move down i.e they will move away from each other.
