# Math Help - Distance and velocity

1. ## Distance and velocity

Just checking my work ...

$distance=s=200t-16t^2$ velocity at 2sec = $v=(2)$?

I did

$s=-32T+200$

to

$s=200-64=136$

Is that correct? The Vs and Ts messed me all up. I wanted to make sure there wasn't a second derivative involved

2. It seems correct

S : distance
V : Velocity
a : acceleration,

$a = \frac{dV}{dt}$

$V = \frac{dS}{dt}$