Revision sem1 q4

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If A = 7i - 5j N and B = 29j N
be two forces acting on a body of mass 1 kg lying at rest at x = 2 cm, then what will be the displacement of the body after 2 seconds?

#Physics #Class VII-X Physics

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101

Sukrit Roy Chowdhury ·2013-06-07 11:07:06

By work energy therorm we know
KEf-KEi=Workdone

So in this case
Intial KE=retarting force * distance travelled

Since kinectic energy is same and retarding force is equal

Distance travelled will be same

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101

Sukrit Roy Chowdhury ·2013-06-07 11:09:23

sry i answered smthng else, the page got hanged

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Sayantan Hazra Got it !!....try to answer this one here
Upvote·0· Reply ·2013-06-07 11:12:14
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Revision sem1 q4

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