How does speed affect stopping distance?

The correct choice emphasizes that the faster a vehicle is traveling, the longer it takes to come to a complete stop. This is based on the physics of motion, specifically the concepts of kinetic energy and reaction time.

As speed increases, the kinetic energy of the vehicle also increases, which means that more energy must be dissipated through braking to bring the vehicle to a halt. Additionally, the time it takes for a driver to perceive a hazard and react plays a crucial role; at higher speeds, even slight delays in reaction can lead to significantly increased stopping distances.

This understanding is crucial for drivers, as it highlights the importance of adjusting speed according to road conditions, traffic, and weather in order to ensure safety while driving. Recognizing the direct relationship between speed and stopping distance can help drivers make better decisions and improve overall road safety.