I am trying to solve this problem

"The driver of a vehicle, travelling at 50 km/h, applies the brakes 100 m

from a crosswalk. Assuming constant braking deceleration, find the

deceleration required to bring the vehicle to a full stop at the crosswalk"

I do not really understand how to approach this problem because I cannot easily visualize it. In this case I am not being given any function so I do not really know what to do.

From what I know both velocity and acceleration should be 0 at the moment the car stops but I don't know how to use this information.

Any help will be appreciated