Is more gas needed to get a car moving or keep the at constant speed?
It takes more gas to get a car moving than to keep it at a constant speed. This is because when a car is moving, it is constantly losing energy to friction and air resistance. In order to keep the car moving at a constant speed, the engine must provide enough power to overcome these losses. When the car is stopped, it is not losing energy to friction and air resistance, so it does not need as much power to keep it moving.