Question

Define momentum?
Define inertia of rest and motion
Class 9
Physics

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Answer 1

Answer

Physics The tendency of a body at rest to remain at rest or of a body in straight line motion to stay in motion in a straight line unless acted on by an outside force; the resistance of a body to changes in momentum. 2. Resistance or disinclination to motion, action, or change: an entrenched bureaucracy's inertia.

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Answer 2

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$The\:effect\:of\:one\:object\:striking\:another\:object\:$

$depends\:on\:both\:the\:mass\:velocity\:of\:former\:object\:this$

$means\:that\:effect\:of\: force\: depend s\:on\:property\: related\:to\:mass$

$and\:velocity\:of\:the\: striking\:object\:this\:property\:is\:known\:as\: momentum.$

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Inertia of rest →

Inertia of rest is the tendency of an object to remain at rest untill and unless acted upon by outside force .

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Inertia of motion →

Inertia of rest is the tendency of an object toremain in moving in straight line (linear direction)untill and unless acted upon by outside force .

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