would the acceleartion of a model car traveling 1.5 meters per second by 0.025 or just 1.5 per second?

Your question makes no sense.
Acceleration is CHANGE of velocity per unit time.

To calculate the acceleration of a model car, we need to find the change in velocity per unit time. In this case, the change in velocity is not provided, so it is not possible to determine the acceleration.

However, if you have the initial velocity and final velocity of the model car, you can calculate the change in velocity by subtracting the initial velocity from the final velocity. Then, divide this change in velocity by the time taken to travel the distance of 1.5 meters per second.

The formula for acceleration is:

acceleration = (final velocity - initial velocity) / time

Without the necessary information, it is not possible to accurately determine the acceleration in this scenario.