What is the effect of heavy cargo on stopping distance?

Answer: C — It increases stopping distance significantly

Heavy cargo has a significant impact on stopping distance because it increases the overall weight of the vehicle. The greater the mass of the vehicle, the more force is required to stop it, as defined by Newton's second law of motion (force = mass × acceleration). When a vehicle is loaded with heavy cargo, the added weight necessitates more braking distance due to increased inertia. In practical terms, this means that when the driver applies the brakes, the vehicle will take longer to come to a complete stop compared to a vehicle carrying lighter cargo. Therefore, it is crucial for commercial drivers to be aware of how the weight of their cargo affects stopping distances, particularly in emergency situations where quick stops might be necessary. Additionally, while conditions like wet roads can affect stopping distance, the primary factor at play with heavy cargo is the increase in momentum and the lengthened distance required to achieve a stop.