You're missing a piece of information in your question! To calculate the time it takes for a car to travel 100 meters, we need to know the initial velocity of the car.

Here's why:

* Constant Acceleration: If the car is accelerating at 9 m/s² (meters per second squared), its velocity is constantly increasing.

* Initial Velocity Matters: If the car starts from rest (initial velocity = 0 m/s), it will take longer to travel 100 meters than if it starts with a significant initial velocity.

Here's how to solve the problem with an initial velocity:

1. Choose an equation of motion: We can use the following equation:

* d = v₀t + (1/2)at²

* d = distance (100 m)

* v₀ = initial velocity (unknown)

* t = time (what we want to find)

* a = acceleration (9 m/s²)

2. Solve for time (t): Rearrange the equation to solve for 't'. This might involve using the quadratic formula if the equation is quadratic.

Please provide the initial velocity of the car, and I can calculate the time for you!