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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: disp
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[Post New]1 May 2008 22:16:21 IST
    Subject: disp
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arpan1 (665)

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a body starts from rest with an accn. of 2  m/s2 . after 5 secs, the direction of accn. reverses again for 5 secs.


the displaceent is


a) 50 m


b) 0


c) 25 m


d)12 m
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[Post New]1 May 2008 22:27:30 IST
    Subject: disp
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chakradarraju (17)

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disp
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[Post New]1 May 2008 22:28:50 IST
    Subject: disp
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chakradarraju (17)

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for first 5 secs.

s=ut+1/2 at^2

u=0, t=5, a=2

s=25 m

for next 5 secs

u=10, t=5, a=-2

s=10*5 - 25 = 25

total disp. = 25+25 = 50 m

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[Post New]1 May 2008 22:29:07 IST
    Subject: Re:disp
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arpan1 (665)

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Olaaa!! Perrrfect answer. 105  bad job dude!! I dont approve of this answer! 1  [177 rates]
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yup right !!
all the best ...
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