In coming to a stop, a car leaves skid marks 92 m long on the highway. Assuming a constant deceleration of 7.00 m/s^2, estimate the speed of the car just before breaking. I think my knowns are the initial position (0 m), final position (92m), acceleration (7.00 m/s^2) and final velocity (0 m/s). But I don't have the time it took to slow down and idk, none of the equations I have for motion at constant acceleration really look like they would help me solve the problem. I apologize for this silly question because I just learned about motion at constant acceleration a few days ago and so I'm not really good at this at all :/ Thank you so much for helping!