Q.Two cars leave with a one minute gap and move with an accelaration of 0.2m/s2.How long after the departure of second car the distance between them become equal to three times its initial value?
a.2 minute
b.3/2 minute
c.1 minute
d.1/2 minute
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Solution
car1 start from rest and drives 60 s => s = at²/2 = 0.5*60²/2 = 900 m