who was he married to?
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define unit of force using second law of motion UNANSWERABLE how does one define force? It is any interaction that, when unopposed, will change the motion of an object. who was the first to define it? The models regarding this were proposed by early thinkers which were corrected by Galileo Galilei, Sir Isaac Newton, and Einstein. where is the first person from? Pisa (then part of the Duchy of Florence), Italy. what is his profession? An astronomer, physicist and engineer.
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Galileo Galilei [SEP] Introduction
Galileo di Vincenzo Bonaiuti de' Galilei (; 15 February 1564 – 8 January 1642) was an Italian astronomer, physicist and engineer, sometimes described as a polymath, from Pisa. Galileo has been called the "father of observational astronomy", the "father of modern physics", the "father of the scientific method", and the "father of modern science". Galileo studied speed and velocity, gravity and free fall, the principle of relativity, inertia, projectile motion and also worked in applied science and technology, describing the properties of pendulums and "hydrostatic balances", inventing the thermoscope and various military compasses, and using the telescope for scientific observations of celestial objects.