Difference Between Speed And VelocityThe 'distance' travelled by a body in unit time interval is called its speed. When the position of a body changes in particular direction, then speed is denoted by 'velocity'. i.e. the rate of change of displacement of a body is called its Velocity. Speed is a scalar quantity while velocity is a vector quantity. Unit: In … [Read more...] about What Is The Difference Between Speed And Velocity
Motion
Measurement of Time Using Periodic Motion
Measurement of Time Using Periodic Motion Any object that is moving is said to be in motion. In order to measure time, we need a motion that repeats itself in equal intervals. Such a motion is called periodic motion.Some examples of periodic motion are the rotation of the Earth about its axis, the revolution of the Earth around the sun, the revolution of the moon around … [Read more...] about Measurement of Time Using Periodic Motion