# Space, Time and Motion

## Abstract

Physical laws must always be experimentally verified. Experiment is the sole judge of the scientific truth. Consequently, any physical quantity must be measurable, namely the set of operations to be performed to measure it must be defined. In particular, a system of units of measurement must be defined. The International Unit system will be described. The mathematical properties of vectors will be discussed. In the second part of the chapter we shall deal with the kinematics of the point like particle, namely the study of its motion, independently of its causes. We shall introduce the vector quantities velocity, angular velocity and acceleration.

## Keywords

Angular Velocity Reference Frame Physical Quantity Cross Product Position Vector## Copyright information

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