7.the greater the mass of an object is the _____of the force of gravity acting on it.
A.better B.greater C.least D.lesser
8.observe the gravitational force of the sun towards the earth, the nearer the earth to the sun the stronger the gravitational pull. The farther the earth moves away from the sun, the gravitational force is _____
A.lighter B.greater C.increases D.lesser
9.The strength of the moon's gravitational pull is only _____of the earth's
A.one eighth B.one half C.one sixth D.one third
10.The gravitational force causes objects to fall toward the center of earth. As an object falls, it experiences air resistance.
A.true B.false C.maybe D.none of the above ​​

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