revision help

**RubbishAtMaths** · January 8th 2009, 09:06 AM

i didnt know where to put revision help so i guess here will do

exam tomorrow morning so im squeezing in some last hours of revising....

can anyone help me with this....

make t the subject $s = 1/2at^2$

i dont know how to start it, dont want to end up with fraction of fractions

**coyoteflare** · January 8th 2009, 09:34 AM

Originally Posted by RubbishAtMaths

exam tomorrow morning so im squeezing in some last hours of revising....

can anyone help me with this....

make t the subject $s = 1/2at^2$

i dont know how to start it, dont want to end up with fraction of fractions

$s = 1/2at^2$ divide by 1/2 to get

$2s = at^2$ tthen divide by a to get

$2s/a = t^2$ then square root to get

$t= \sqrt{ 2 s/a}$

sorry im no good at usign this [tex] stuff

$\sqrt{\frac{2s}{a}}=t$

**shinhidora** · January 8th 2009, 09:34 AM

Originally Posted by RubbishAtMaths

i didnt know where to put revision help so i guess here will do

exam tomorrow morning so im squeezing in some last hours of revising....

can anyone help me with this....

make t the subject $s = 1/2at^2$

i dont know how to start it, dont want to end up with fraction of fractions