You need an expression for the acceleration of the Moon toward Earth. If the mass of Earth is M_e, the mass of the Moon M_m, the separation of Earth and Moon r, and the appropriate gravitational constant is G, the correct expression for the Moon's acceleration is

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Quizplus · Accepted Answer

The expression for the acceleration due to gravity is given by GM/r^2 where G is the gravitational constant, M is the mass of the attracting body, and r is the distance between the two bodies. In this case, the Moon is attracted towards Earth, so M is the mass of Earth, and r is the distance between Earth and Moon. Therefore, the expression for the acceleration of the Moon towards Earth is GME/r^2.

You Need an Expression for the Acceleration of the Moon