Final answer:
A school bus takes longer to stop than a small car because of Newton's Second Law of Motion; it has greater mass and momentum, needing more force and time for deceleration.
Step-by-step explanation:
The question you've asked relates to why a school bus full of kids takes longer to stop than a small car with a single passenger. This is an example of Newton's Second Law of Motion, which states that force equals mass times acceleration (F=ma). In this case, the school bus has a much larger mass compared to the small car. When brakes are applied, both the school bus and the car exert a force to stop, but because of the larger mass, the force applied by the brakes must be greater for the bus to achieve the same acceleration (or deceleration in this case) as the car. Additionally, the momentum of the bus, which is the product of mass and velocity, is greater, so it requires more time to bring the bus to a stop compared to the car with less momentum.