9th physics (EM) | Lesson 2 Motion - 1 | Relativity

We see several examples of motion around us like motion of people, vehicles, trains, aeroplanes, birds, rain drops, objects thrown into air, etc. We know that it is due to the motion of the earth that phenomena like sunrise, sunset,changes in the seasons etc occur. earth is in motion,
why don’t we directly perceive the motion of the earth?
what is ment by relative ?
right and left, up and down, larger and shorter etc.‘motion’ is also relative to the observer.
day and night,rightand left,up and down ......etc are all relative to each other
The 'motion' or 'rest' of an object depends on the observer.
We know that earth is a sphere, the upward direction of the vertical position on its surface depends upon the place on the earth’s surface, where the vertical is drawn. Hence the notions 'up and down' have no meaning unless the point on the Earth’s surface, to which they refer, is defined.
Discuss the meaning of the terms 'longer and shorter' with few examples.

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2. CLASS – 2 DISTANCE & DISPLACEMENT
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9th chemistry ( TM ) ---

Physical science experiments and demonstrations

Matter around us
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[abhinaylearning]

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[ITS_TIME_TO_SHOW_]

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[EstherKoyya]

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[rajeshhod]

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[snkrishnacom]

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[sumathib]

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[rudrakshinianga]

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[tgffsrikar]

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