13.What do you mean by free fall? 14.What do you mean by acceleration due to gravity? 15.Why is the weight of an object on the moon 1/6th its weight on the earth? 16. What is the magnitude of the gravitational force between the Earth and a 1 kg object on its surface? 17.What is the acceleration of free fall? 18.What is the weight in Newton of a 10 kg object on the moon and on the earth? 19.How does the acceleration due to gravity varies with height? 20.Identical packets are dropped from two aeroplanes—one above the equator and other above the north pole, both at height h. Assuming all conditions to be identical, will those packets take same time to reach the surface of Earth? Justify your answer.
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In Newtonian physics, free fall is any motion of a body where gravity is the only force acting upon it. In the context of general relativity, where gravitation is reduced to a space-time curvature, a body in free fall has no force acting on it.
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