Measurements Measurements PART 2 • The International System of Units (abbreviated SI from the French language name Système International d’Unités) is the modern form of the metric system. • It is the world’s most widely used system of units, both in everyday commerce and in science. • The derived unit is a combination of base units through multiplying and/or dividing them. • For instance, Speed is defined as the rate of distance change, and can be written in the mathematic form EXAMPLE :- Find the derived unit of density. @icebearrawrr
• Scalars are quantities which are fully described by a magnitude alone. • Magnitude is the numerical value of a quantity. • Examples of scalar quantities are distance, speed, mass, volume, temperature, density and energy. • Vectors are quantities which are fully described by both a magnitude and a direction. • Examples of vector quantities are displacement, velocity, acceleration, force, momentum, and magnetic field. • EXAMPLE :- Scalar Vector • speed • distance • energy • electrical charge • density • volume • length • time • temperature • mass • power • work • velocity • acceleration • displacement • momentum • force • impulse @icebearrawrr