What is MotionWhen a body does not change its position with time, we can say that the body is at rest, while if a body changes its position with time, it is said to be in motion.Analysing Linear Motion Linear motion is motion in a straight line.Non-line…

Measurement of Time Using Periodic MotionAny 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 th…