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1) A
2)C
3) periodic motion
4)
5
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1. c , d
2. a , c
3. periodic motion
4.states of a body
5. rest
6. mechanics
7. REST - if postion of a body does not change with the passage of time
MOTION - if position of a body changes with the passage of time
8. i - a) whirling stone. b) revolution of satellite
ii - a) satellite motion b) ticking of clock
9. i - in Rotatory motion the body revolves around a fixed axis
ii - in periodic motion body repeats its motion after a fixed time interval
10. they are in the rest with respect to us
11. rest and motion is relatable by the frame of refrence i.e. who is seeing the object . a body in motion sees another body , which is in rest , as in motion.
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