4/17/2023 0 Comments Sir isaac newton laws of motion![]() Although a person sitting in a car is at rest with respect to the car, both in motion with respect to the earth, and the earth is in motion with respect to the sun and the center of the galaxy. When one speaks of an object as being in motion, such motion is usually in reference to another object which is considered at rest. ![]() The theory of relativity also resolves the question of absolute motion. When the motions of extremely small objects (atoms and elementary particles) are described, the wavelike properties of matter must be taken into account (see quantum theory). ![]() The equations derived from the theory of relativity reduce to Newton's when the speed of the object being described is very small compared to that of light. Motion at speeds approaching the speed of light must be described by the theory of relativity. However, when applied to extremely high speeds or extremely small objects, Newton's laws break down. Newton's laws of motion, together with his law of gravitation, provide a satisfactory basis for the explanation of motion of everyday macroscopic objects under everyday conditions. The third law implies that the total momentum of a system of bodies not acted on by an external force remains constant (see conservation laws, in physics). The relationship between force and motion was expressed by Sir Isaac Newton in his three laws of motion: (1) a body at rest tends to remain at rest or a body in motion tends to remain in motion at a constant speed in a straight line unless acted on by an outside force, i.e., if the net unbalanced force is zero, then the acceleration is zero (2) the acceleration a of a mass m by an unbalanced force F is directly proportional to the force and inversely proportional to the mass, or a = F/ m (3) for every action there is an equal and opposite reaction.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |