Final answer:
The school bus would be the least affected when a force of 10 is applied to it due to its greater mass and larger surface area compared to the other options.
Step-by-step explanation:
If an equal force of 10 is applied to each of the following answer choices, the school bus would be the least affected.
The effect of a force on an object is determined by the mass and surface area of the object.
The heavier and larger the object, the less it will accelerate when a given force is applied. In this case, a cheetah, hummingbird, and airplane all have significantly less mass and smaller surface areas than a school bus.
Therefore, a school bus, being much more massive, would experience less acceleration due to the same force and thus be the least affected.