Same retarding force is applied to stop the train in certain distance. When the speed is doubled, how is this distance changed?

The same retarding force is applied to stop a train. IF the speed is doubled then the distance will be

A retarding force is applied to stop motor car. If- the speed of the motor car is doubled, how much more distance will it cover before stopping under the same retarding force?

A retarding force is applied to stop a motor car . If the speed of the motor car is doubled , how much more distance will it cover before stopping under the same retarding force ?

When brakes are applied on a moving vehicle, it stops after travelling a distance. The distance is called stopping distance. If the initial speed is doubled keeping the retardation same, by how much will the stopping distance change?

When brakes are applied on a moving vehicle, it stops after travelling a distance. The distance is called stopping distance.Write an expressionof stopping distance in terms of initial velocity (u) and retardation (a).