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![[Post New]](/templates/default/images/icon_minipost_new.gif) 2 May 2007 00:44:52 IST
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let the car take a time t1 to acwuire the velocity v
v=at1
then let it take a time t2 to come to rest
0-v=(-b)t2
the total distance travlled in the trip
1/2at1^2 + vt1 +vt2 - 1/2bt2^2 =s
now the average velocity=total distace / total time
=s/t
here t=t1+t2 .
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