A car is traveling at 108 km/h, stuck behind a slower car. Finally the road is clear and the car pulls over to make a pass. The driver stomps on the gas pedal and accelerates up to a speed of 135 km/h. If it took 3.5 s to reach this speed, what is the average acceleration of the car?

The average acceleration of the car is 2.143 meters per square second.

Explanation:

Let assume that car accelerates uniformly, in that case, we can obtain the value of acceleration by using the following equation of motion:

Where:

- Initial velocity, measured in meters per second.

- Final velocity, measured in meters per second.

- Acceleration, measured in meters per square second.

- Time, measured in seconds.

Now, we clear acceleration within expression:

Initial and final velocities are now converted from kilometers per hour into meters per second:

If we know that , then, the average acceleration of the car is:

The average acceleration of the car is 2.143 meters per square second.

it is the second option.