If the 2kg object is on or near the Earth's surface, then the Earth and the object pull each other with a force of 19.6 Newtons ... one force in each direction.
The Earth pulls on every kilogram with a force of 10N. This force is the objects weight. So the weight of a 2kg object would be : 2 x 10 = 20 Newtons. Hope this helped...
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