Simple Vector Calc: Homework Solutions

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Homework Statement



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Homework Equations





The Attempt at a Solution



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My only comment would be that the problem is very poorly stated. It is one thing to say the path is given parametrically by r(t) = <t, (1/2)t2> and another thing to say that r(t) describes the position of the motorcycle at time t, t in seconds, which it does not state. The problem is not solvable without assuming that.
 
oh... i think its their negligence.. But if they have stated that.. will my working be correct? :) Thanks again!
 
icystrike said:
oh... i think its their negligence.. But if they have stated that.. will my working be correct? :) Thanks again!

I think mostly correct. I'm disagreeing with your N by a factor of 1/sqrt(2), but I might be off so check it.