What is a quantity in physic

In physics, a quantity is a property or attribute that can be measured or quantified. This can include physical properties such as mass, volume, length, time, temperature, energy, density, velocity, acceleration, force, and many others. Quantities can be either scalar, represented by a single number, or vector, represented by a magnitude and direction. Quantities play a fundamental role in describing the physical world and are essential in formulating the laws and principles of physics.

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