law of universal gravitation
for any pair of objects each object attracts the other object with a force that is directly proportional to the product of the mass of the object and universalty proportional to the square of the distance between their centers of mass.
universal gravity constant
the costant g in the equaition for newtons law of universal gravitational.
inverse square law
a physical quality varies inversly as another quantity squared example.
a force field that exists in the space around every mass or group of mass.
the condition of free fall toward or around th earth in which an object expeiriences no support.
a high or low , the tide with the greatest difference between consecutive low and high tides
a less than average tide occurring at the first and third quarters of the moon