Let's take close look to basic and importantconcepts of chapter motion for class 9th Science. What is Motion? A body is said to be in motion when it’s position is changes continuously with respect to a stationery object taken as a reference point. What is Distance? The actual path covered by a moving body is called Distance that is travelled by a body. It is a scalar quantity. What is displacement? The shortest distance between the initial and final position is called displacement. It is a vector quantity. What is Uniform motion? A body has a uniform motion when it travels equal distance in intervals of time. What is Non-Uniform motion? A body has a non-uniform motion when it travels unequal distance in intervals of time. What is speed? Distance travelled by a body per unit time is called speed. What is Velocity? Displacement produced by a body per unit time is ...
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