So I have the formula and values substituted in correctly - but now the simple algebra part is killing me.

x = vt + 1/2at^2

.06=(2*10^3)t + 1/2(4*10^7)t^2

What is t?

Printable View

- Aug 9th 2010, 06:53 PMjessegarwoodPhysics Kinematics Equation Must Be Solved W/ Algebra
So I have the formula and values substituted in correctly - but now the simple algebra part is killing me.

x = vt + 1/2at^2

.06=(2*10^3)t + 1/2(4*10^7)t^2

What is t? - Aug 9th 2010, 07:09 PMeumyang

Set equal to 0 and rearrange:

Use the quadratic formula:

- Aug 9th 2010, 07:11 PMTKHunny
Yikes! You should have studied Quadratic Equations over the previous years.

If you write it like this: ½at^2 + vt - x = 0, you should find solutions from the Quadratic Equation, or Completing the Square. Ringing any bells, yet?