1. Acceleration help

Assume that a fully loaded plane starting from rest has a constant acceleration while moving down a runway. The plane requires 0.7 mile of runway and a speed of 160 miles per hour in order to lift off. what is the plane's acceleration?
---I don't get this problem...plz...help me...thanks

2. use this formula

$\displaystyle v_{t}^{2}-v_{0}^{2}=2as$, where $\displaystyle v_{t}$ and $\displaystyle s$ are given, and $\displaystyle v_{0}=0$. Then we have the $\displaystyle a$.

3. Thanks Fresnel...but.. how can i know if this formula : V^2 - V0^2 = 2as in physic or calculus... Can you have another way to solve it involve to acceleration in calculus.

4. Originally Posted by linean
Thanks Fresnel...but.. how can i know if this formula : V^2 - V0^2 = 2as in physic or calculus... Can you have another way to solve it involve to acceleration in calculus.
It's one of Newton's Laws of motion albeit more often written as $\displaystyle v^2 = v_0^2+2as$

By definition

$\displaystyle a = \frac{\Delta v}{\Delta t}$

but why you'd use calculus is beyond me since acceleration is constant so Newton's Laws of Motion can be applied

5. Using Integrals for Acceleration Problem

Hi there! I realize this post is pretty late, you probably already have the solution. But I thought I'd post it anyway, in case someone else needed it. I ran into this problem in my text today and it drove me crazy. Everyone wanted to use kinematics or definite integrals, neither of which were appropriate for the section. I hope it's acceptable that I uploaded the image, I hate trying to interpret ^ and / everywhere.

Hope this helps.

Sarah