Final answer:
The falling book is a good example of free fall due to only gravity acting on it, while the paper is not due to the additional force of air resistance.
Step-by-step explanation:
Falling Book as an Example of Free Fall
The falling book is a good example of free fall because it experiences only the force of gravity acting on it. When the book is released, the only force acting on it is the force of gravity pulling it downwards. This means that the book falls with constant acceleration.
Paper is Not an Example of Free Fall
The paper, on the other hand, is not a good example of free fall because it experiences additional forces, such as air resistance. Unlike the book, the paper is light and has a large surface area, causing air resistance to have a considerable effect on its motion. As a result, the paper falls with varying acceleration due to the influence of air resistance.
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