What are these velocity formulas used for?

[mogibb1]

Homework Statement

I copied these formulas down that my professor had written on the board, but I have no
idea how they may apply to velocity or acceleration.

Homework Equations

v=at+v₀

v-v₀=a(t-t₀₎

v₁=10(1)+0 = 10 m/s I believe that the 10 represents gravity, but don't know what the (1)+0 is for. Also, what does the V₁ indicate?

He had V₀ written off to the side by itself and I think he said something about it being where an object started at rest, but I don't remember what he said and I didn't have a chance to ask because he was quickly onto the next topic.

The Attempt at a Solution

Homework Statement

I'm trying to make sense of everything I copied down from the blackboard, but I don't recall anything about these items. If anyone can help I do appreciate it. Thank you very much.

Homework Equations

The Attempt at a Solution

 

[rock.freak667]

v=v₀+at
v = velocity at time t.
v₀ = initial velocity (m/s_
a= acceleration (m/s²)
t= time (s)

More can be found http://www.physicsclassroom.com/class/1dkin/u1l6a.cfm" .