# Homework Help: Calculate distance given accleration, initial & final speed

1. Mar 21, 2010

### AQuestionX

dleted due to error

Last edited: Mar 21, 2010
2. Mar 21, 2010

### Seannation

The equation you've used is finding time, not distance.

The equation to use in this case is:

$$v^2 = u^2 + 2as$$

Where v is the final speed, u is the initial speed, a is the acceleration and s is the displacement.

Rearrange this to find s.

Remember that the driver is decelerating, so the acceleration is -2.68 ms^-2.