```
a = (v - u) / t
```
Where:
* a: acceleration in meters per second squared (m/s²)
* v: final velocity (in meters per second, m/s)
* u: initial velocity (in meters per second, m/s)
* t: time taken for the change in velocity (in seconds, s)
In this case, the car covers a distance in 6.8 seconds. Since the initial and final velocities are not given, we can assume the initial velocity (u) to be 0 m/s (since the car starts from rest) and then calculate the final velocity (v).
If the car covers a certain distance in 6.8 seconds, we can calculate the average velocity (v) by dividing the total covered distance by the time taken:
```
v = distance / time
```
Without knowing the actual distance covered, let's assume a hypothetical distance of 100 meters. Therefore:
```
v = 100 meters / 6.8 seconds ≈ 14.7 meters / second
```
Now, we can calculate the acceleration (a) using the formula:
```
a = (v - u) / t
```
Plugging in the values:
```
a = (14.7 m/s - 0 m/s) / 6.8 seconds ≈ 2.16 meters / second squared
```
Therefore, the acceleration of the car is approximately 2.16 m/s². Keep in mind that this acceleration value is based on hypothetical distance, and the actual acceleration may vary depending on the actual distance covered.
