quick M1 question
Maths and statistics discussion, revision, exam and homework help.
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quick M1 questionFor question 7iv, why is the value of T the smaller value of the quadratic? So, why is t 3 instead of 6??
http://pdf.ocr.org.uk/download/pp_11..._gce_4728.pdf?
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Re: quick M1 questionThey only really collide once.(Original post by master y)
For question 7iv, why is the value of T the smaller value of the quadratic? So, why is t 3 instead of 6??
http://pdf.ocr.org.uk/download/pp_11..._gce_4728.pdf?
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From the quadratic equation, it tells us they collide either at time 3 or 6.
If they collided when t=3, then they won't collide again.
So the time cannot be 6. Since they have already collided.
And the question says "P and Q collide first when t=T."
Hope this makes sense.Last edited by kogaht; 29-05-2012 at 08:56. -
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Re: quick M1 questionoh gosh that does make sense! thanks!(Original post by kogaht)
They only really collide once.
From the quadratic equation, it tells us they collide either at time 3 or 6.
If they collided when t=3, then they won't collide again.
So the time cannot be 6. Since they have already collided.
And the question says "P and Q collide first when t=T."
Hope this makes sense.
