A car moving with a speed of 40km/hr can be stopped by applying breaks for 2 km. If the same car is moving with a speed of 80km/hr, what is the minimum stopping distance? Assume constant retardation.
A car moving with the speed 50 km/ he can be stopped by brakes after at least 6m. If the same car is moving with the speed of 100 km/hr the minimum stopping distance is