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My physics teacher told me its the same for any distance but the formula for orbital velocity is under root of Gm/R+H so it must vary ?

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  • $\begingroup$ Because $v$ is a function of the orbital radius, a change in the orbital radius will result in a change in orbital velocity. $\endgroup$
    – HDE 226868
    Commented Sep 6, 2015 at 18:03
  • $\begingroup$ I think your teacher meant that speed of the satellite in a CIRCULAR ORBIT doesn't change at any point of the trajectory(It's not the case for example for an elliptic trajectory). It will of course vary for various radius but that means other trajectories. $\endgroup$
    – Oussama Boussif
    Commented Sep 6, 2015 at 18:35

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