I earlier asked a question about physics (as Mr. Squirrel). I was given a brilliant answer in a formula as my answer.

1/2t^2+i*t+h=c

t=time passed

i=initial velocity

h=initial height

c=current height

I plugged in a few things, trying to find "t".

t=?

i=0 (falling, so 0)

h=10m

c=5m

And the answer I got was:

t^2 = -10

THAT'S IMPOSSIBLE!

What's wrong with the formula, because I checked the math w/ my teacher, my dad, etc. So it isn't me.

Any ideas?