# velocity question!

• Aug 19th 2011, 03:33 AM
MathYUNoEasy
velocity question!
http://i53.tinypic.com/htfpro.png

Does anybody know how to solve this? I can't get the answer :(
It's supposed to be 8m/s
• Aug 19th 2011, 04:29 AM
mr fantastic
Re: velocity question!
Quote:

Originally Posted by MathYUNoEasy
http://i53.tinypic.com/htfpro.png

Does anybody know how to solve this? I can't get the answer :(
It's supposed to be 8m/s

Use one of the well known formulas for uniform acceleration: $s = ut + \frac{1}{2} at^2$.

Substitute the given data and solve for u.
• Aug 19th 2011, 04:52 AM
MathYUNoEasy
Re: velocity question!
Wow, thanks, I got the right answer!
This formula isn't in my syllable yet though, I think they're expecting me to solve it in a, well, more tedious way, since they're offering 7 marks. What are other ways to solve this?
• Aug 19th 2011, 01:59 PM
skeeter
Re: velocity question!
Quote:

Originally Posted by MathYUNoEasy
Wow, thanks, I got the right answer!
This formula isn't in my syllable yet though, I think they're expecting me to solve it in a, well, more tedious way, since they're offering 7 marks. What are other ways to solve this?

if this problem is for a grade, then MHF policy prohibits assistance.
• Aug 19th 2011, 02:01 PM
Ackbeet
Re: velocity question!
Quote:

Originally Posted by skeeter
if this problem is for a grade, then MHF policy prohibits assistance.

• Aug 19th 2011, 03:03 PM
mr fantastic
Re: velocity question!
Quote:

Originally Posted by MathYUNoEasy
Wow, thanks, I got the right answer!
This formula isn't in my syllable yet though, I think they're expecting me to solve it in a, well, more tedious way, since they're offering 7 marks. What are other ways to solve this?

Then your job is to derive the formula from the hints you were given. Or to go to an appropriate textbook and review the derivation.