Question

s=1/2gt^2+vt for v

Answer 1

you are just trying to solve this for v?

Answer 2

yes

Answer 3

subtract 1/2gt^2 from both sides, then divide both sides by t. does this make sense?

Answer 4

yeah but then when i divided i got stuck on what happens with the 2 and the v in the bottom of the fraction

Answer 5

ok one sec.

Answer 6

i meant 2 and t sorry

Answer 7

\[\frac{ s-\frac{ 1 }{ 2 } g*t^2 }{ t }=v\]

Answer 8

when you divide fractions, you know that you multiply by the reciprocal.

Answer 9

so s-1/2gt^2 + 1/t just cancels out one of the t's from the numerator. You can write the gt in the numerator so \[v=s-\frac{ g*t }{ 2 }\]

Answer 10

\[\frac{ 1 }{ 2 }g*t^2*\frac{ 1 }{ t }\]

Answer 11

i completely forgot about multiplying by the reciprocal. thats why i was so stuck on that t

Answer 12

awesome. so it worked out?

Answer 13

i haven't tried it yet

Answer 14

its sometimes eaiser to see if you write the gt^2 in the numerator i guess... sorry

Answer 15

\[v=s-\frac{ g*t^2 }{ 2 }*\frac{ 1 }{ t }\]

Answer 16

yes it works :)

Answer 17

thanks :)

Answer 18

awesome. good luck.