Question

Q.1 Answer the following questions.
1) What is the need for measurement of a physical quantity?
2) What are derived quantities and derived units? State two examples.
3) Define scalars and vectors. Give two examples of each.
mootor and null vector?​

Answer 1

Answer:

By measuring physical quantities, we are able to measure the mass, weight and different physical properties for example, distance, speed, mass, pressure, force, momentum, energy. Note: A physical quantity is a property that can be quantified by measurement of a material or system.