(Solved): A moon is in an elliptical orbit about a planet as shown above. At a point \( A \) the moon has sp ...

A moon is in an elliptical orbit about a planet as shown above. At a point \( A \) the moon has speed \( u_{A} \) and is at a distance \( R_{B} \) from the planet. At point \( B \) the moon has speed \( u_{B} \). Which of the following explains a correct method for determining the distance of the moon from planet \( B \) in terms of the given quantities? Conservation of angular momentum, because the gravitational force exerted by the moon on the planet is the same as that exerted by the planet on the moon Conservation of angular momentum, because the gravitational force exerted on the moon is always directed toward the planet Conservation of energy, because the gravitational force exerted on the moon is always directed toward the planet Conservation of energy, because the gravitational force exerted by the moon on the planet is the same as that exerted by the planet on the moon