Initial Velocity Calculation Help: Find V0 from 9.8m & 4.7m/s/s

[tennis38]

A car drives at constant velocity on a road. As it comes near a stop sign, the driver brakes, which makes the car decelerate at 4.7 m/s/s. If the car traveled 9.8 METERS while the driver was braking, what was the starting or initial velocity just when the driver was hitting the brakes?

I can't find initial velocity because I can't find the final velocity here. Help please.

 

[Nathanael]

The final velocity is zero, the car comes to a stop.