The same retarding force is applied to stop a train. The train stops after $80 m$. If the speed is doubled, then the distance will be
The same retarding force is applied to stop a train. The train stops after $80 m$. If the speed is doubled, then the distance will be
The same
Doubled
Halved
Four times
The same retarding force is applied to stop a train. The train stops after $80 m$. If the speed is doubled, then the distance will be
Stopping distance $S \propto {u^2}$. If the speed is doubled then the stopping distance will be four times.