Question

calculate the force of gravity between earth (mass = 6.0 x 1024kg) and the moon (mass = 7.4 x 1022 kg). the average Earth-moon distance is 3.8 x 108 m.

Answer 1

The equation that you need to answer this question is called Newton's universal law of gravity.

You can find it and an explanation at

http://www.physicsclassroom.com/class/circles/u6l3c.cfm

You will learn physics much better if you do this yourself.