# Jennifer works for an automaker and tests the safety performance of cars. She watches a 2,000-kilogram car crash into a wall with a force of 30,000 newtons. What’s the acceleration of the car at impact? Use A=v-u/t .

##### 1 Answer

#### Answer:

#### Explanation:

It doesn't seem that the formula given can be used to find the acceleration of the car.

The time of acceleration nor the initial and final velocities of the car are provided.

So we must use the formula

We want to find its acceleration on impact, so let's solve the equation for

Now, let's plug in the relevant values (which are provided):

Therefore, the acceleration of the car on impact is