What is the formula for finding initial velocity from acceleration and distance?

[mcryder16]

Homework Statement

A car accelerates at 1.65 m/s2 along a straight road. It passes two marks that are 30 m apart at times 2.4 s and 4.8 s. What was the car's initial velocity?

Homework Equations

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The Attempt at a Solution

 

[nickjer]

Well you should list some relevant equations. Here is what you know: a, x, and change in time. And you want to know v_0.

So in your list of kinematic equations, do you have an equation that has all 4 of those variables?

 

[TaiwanCountry]

v = vo + at
s = 1/2 at²
v² = v0²+2as

choose one

 

[nickjer]

Your 2nd equation you listed is inaccurate TaiwanCountry. You forgot to mention the initial velocity in that equation.