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yup..i tried to buy the answer is
\[2\sqrt{2} ms^{-1}\]

no the books answer is tht, i tried nd i dnt get it o.O

What do you get for (2) - (1) ???

I meant my way to get the answer doesn't make sense..

so theres no solution?

yes i agree:)

I know it doesn't make sense at all...

it does:) \[\sqrt{8}--->2\sqrt{2}\]

can u explain ur assumption?

i understand b^2 - 4ac = 0

thanks alot :)

yes..evn i thought the same thng

But there is a bug? :|

wt u mean?

Hmm.. I don't know :|

anyway thnks once again :)