ATAR Notes: Forum

VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Physics => Topic started by: kriptik on January 03, 2010, 03:13:01 pm

Title: motion question
Post by: kriptik on January 03, 2010, 03:13:01 pm: hey guys i was stuck on this question,

just dont get it, :(
Title: Re: motion question
Post by: Akirus on January 03, 2010, 03:28:45 pm: Not sure if it's correct, but here's what I got:

$x=400m$

$u=0ms^{-1}$

$v=22.222ms^{-1}$

$t=?$

$x=\frac{1}{2}(u+v)t$

$400=\frac{1}{2}(22.222)t$

$<br />400=11.111t$

$t=36s$

Then...

$v=22.222ms^{-1}$

$d=x=?$

$t=36s$

$v=\frac{d}{t}$

$22.222=\frac{x}{36}$

$x=799.999$

$x=800m$
Title: Re: motion question
Post by: kriptik on January 03, 2010, 03:59:30 pm: yerp thats right thanks :)