What do you mean by free fall?
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Earth attracts objects towards itself due to the gravitational force. Whenever objects fall towards the earth under this force alone, we say that the objects are in free fall.
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State the universal law of gravitation.
Write the formula to find the magnitude of the gravitational force between the earth and an object on the surface of the earth.
What do you mean by acceleration due to gravity?
What are the differences between the mass of an object and its weight?