# Finding distance based off acceleration

1. Oct 6, 2007

### JDR 007

[SOLVED] finding distance based off acceleration

1. The problem statement, all variables and given/known data

A car slows down uniformly from a speed of 26.0 m/s to rest in 4.50 s. How far did it travel in that time?

2. Relevant equations
Acceleration (you all know it)

3. The attempt at a solution
I am totally stuck all I can do is find acceleration ...-5.78m/s^2

2. Oct 6, 2007

### learningphysics

What kinematics formulas do you know for uniform acceleration? displacement formulas...

3. Oct 6, 2007

### Kurdt

Staff Emeritus
Last edited: Oct 6, 2007
4. Oct 6, 2007

### JDR 007

$$x = x_0 + v_0 t + (1/2) a t^2$$ Should I try using this?

5. Oct 6, 2007

### learningphysics

you can do that since you've calculated acceleration.

you can also use $$d = \frac{(v1 + v2)}{2}*t$$

which also gives you the answer.

6. Oct 6, 2007

### JDR 007

45.495m is that right?

7. Oct 6, 2007

### learningphysics

No. how did you get that?

8. Oct 6, 2007

### JDR 007

I accidentally pluged accel. in for velocity

9. Oct 6, 2007

### JDR 007

so.. 26*4.5-1/2(-5.78) what am I missing

10. Oct 6, 2007

### JDR 007

58.5?....v1 26m/s v2 0m/s t=4.5

11. Oct 6, 2007

### Kurdt

Staff Emeritus
You should add on the acceleraton term and multiply it by the time squared.

12. Oct 6, 2007

### Kurdt

Staff Emeritus
That is correct.

13. Oct 6, 2007

### JDR 007

I totally was making that harder than it was, I would like to thank you for your help