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Answers
Explanation:
4. ans :-. Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matter. ... On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth's mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects.
5. ans:-. Newton's laws of motion are three physical laws that, together, laid the foundation for classical mechanics. They describe the relationship between a body and the forces acting upon it, and its motion in response to those forces
6.ans:- a force that acts on a body moving in a circular path and is directed towards the centre around which the body is moving.
7.ans:- the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface.