Answer:
The main results obtained by Galileo in mechanics were the law of inertia and the principle of relativity.
Explanation:
The main results obtained by Galileo in mechanics were the law of inertia and the principle of relativity, according to which the uniform and rectilinear motion of a system of bodies is not reflected in the processes that occur in that system.
Galileo composed a text on movement in which he criticized the Aristotelian explanations of the fall of bodies and the movement of projectiles. Galileo laid the physical and mathematical foundations for the analysis of motion, which allowed him to demonstrate the laws of falling bass in a vacuum and to elaborate a complete theory of projectile firing.
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