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Science physicas ncert question class 9 chapter motion​

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Answer:

motion - an OBJECT is said to be in motion if its POSITION CHANGES with time in RELATION to a STATIONARY object it is said to be in motion.

rest:- an object is said to be in motion if its position does not changes with time in relation to a stationary object it is said to be in rest.

Types of motion

1.translatory motion

2.periodic motion

3.non-periodic motion

4.curvilinear motion

5.rectilinear motion

6.rotational motion

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