iNsChris
Sep29-04, 05:37 AM
IGNORE THIS - CANT DELETE HAVE NOW REALISED MY ERROR SORRY
Just wondering if i am either:
Being Illogical
Book has a typo
Or simply rearranging equation to suit the question.
here is the question...
A Car acclerates from 5 m s -1 to 15 m s-1 in 6 seconds.
Find the acceleration.
Chosen formula:
V = U + AT
So i thougth ok... replace letters with numbers (logical)
5 = 15 = (ax6)
So then i think hmmm thats not right... wont get me an answer and if it did it would be totally wrong!
So i checked textbook and see:
15 = 5 + (ax6)
a = 1.67
Now... This is actualy u = v+ AT
So... it makes sense sure... But they have changed the equation a bit.
i want to know something...
Is it a typo in the textbook (No... it gets the correct answer).
Is it simply changing the equation to suite the question therefore getting us a answer...
And if so - Where can i find out all this "rearranging" equations stuff.
Im a distance learner, I may phone my tutor but i thought i would put it here first.
Thanks,
Just wondering if i am either:
Being Illogical
Book has a typo
Or simply rearranging equation to suit the question.
here is the question...
A Car acclerates from 5 m s -1 to 15 m s-1 in 6 seconds.
Find the acceleration.
Chosen formula:
V = U + AT
So i thougth ok... replace letters with numbers (logical)
5 = 15 = (ax6)
So then i think hmmm thats not right... wont get me an answer and if it did it would be totally wrong!
So i checked textbook and see:
15 = 5 + (ax6)
a = 1.67
Now... This is actualy u = v+ AT
So... it makes sense sure... But they have changed the equation a bit.
i want to know something...
Is it a typo in the textbook (No... it gets the correct answer).
Is it simply changing the equation to suite the question therefore getting us a answer...
And if so - Where can i find out all this "rearranging" equations stuff.
Im a distance learner, I may phone my tutor but i thought i would put it here first.
Thanks,