i solved it. thanks to all who responded
shouldnt the answer be the same as the one in part a?
Apply the energy conservation.
No, its speed needs to be increased at point 1 so that it matches the speed if it were in the elliptical orbit. This will then transfer it into the new elliptical orbit, or stated differently its energy need to be increased (kinetic) so that it matches the energy of the elliptical orbit at that point (the potential energy is the same at that point for both orbits).
Can you show how you got that answer?
thanks for responding guys, and i got that answer by using this formula:
v= (sq. root) GM/(Re+h)
part a is definately right, though
That looks good to me.
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