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Mass is a fundamental property of matter that measures the amount of matter an object contains. In physics, mass is often denoted by the letter "m" and is measured in kilograms (kg).
Mass and weight are often used interchangeably in everyday language, but they have different meanings in physics. Mass is a measure of the amount of matter, while weight is a measure of the force of gravity acting on an object. Mass is constant, while weight can change depending on the strength of the gravitational field.
Mass can be calculated by dividing an object's weight by the acceleration due to gravity. The formula for mass is: m = F/g, where m is the mass, F is the force of gravity, and g is the acceleration due to gravity.
Inertia is the tendency of an object to resist changes in its state of motion. Mass is related to inertia, but they are not exactly the same. Mass is a quantitative measure of inertia, while inertia is a qualitative property that describes an object's resistance to changes in motion.
According to Newton's second law of motion, the acceleration of an object is directly proportional to the force applied to it and inversely proportional to its mass. This means that the greater the mass of an object, the more force is needed to accelerate it. In other words, the more massive an object is, the harder it is to change its motion.
