Answer:

7) the universal law of gravitation makes us to bind to the earth .

8) 9.9m/s² is the acceleration of free fall.

9) the gravitation between earth and any body is called as "gravity".

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Answer:

Answer 9 :The gravitationalal force between the earth and an object is called the weight of the object. It is also equal to the product of acceleration due to gravity and mass of the object. The weight of any object, w = mg where m is the mass of the object and g is the acceleration due to gravity for the earth (g = 9.8 ms2).