I really don't like this unit mostly because i dont understand it. So can anyone please explain how to do this question i really need help.

 

Determine the magnitude and direction of the gravitational force exerted (a) on the Moon by Earth and (b) on Earth by the Moon.

 

I dont know how to do this, can anyone please explain how to do this question. Also are they looking for g or FG.

Determine the magnitude and direction of the gravitational force exerted (a) on the Moon by Earth and (b) on Earth by the Moon.

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First, try to understand the direction part. What do you know about gravity, and how do the masses of objects effect their gravitational field?

they are looking for FG. use a vector diagram as this will display all the require information in the smallest possible way. and physics teachers have a fetish about diagrams.