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Answer the following questions1) What are contact and non- contact force ? 2) What are the four effects of forces ? 3) List out two advantages and two disadvantages ?4) Mention two ways by which we can reduce friction ?5) How do ball bearings reduce friction between parts ? Agar a hi gai ho to answer bhi dai do​

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ANSWER:

CONTACT FORCES are those forces which CONTRACT each other and noncontact forces are those forces which does not contract each other



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