As a body falls through air starting from rest, its velocity (don't ignore the air resistance) stays constant. continuously decreases. continuously increases. gets larger and larger, eventually reaching a constant value. gets smaller and smaller, eventually approaching zero.
As a body falls through air starting from rest, its velocity (don't ignore the air resistance) stays constant. continuously decreases. continuously increases. gets larger and larger, eventually reaching a constant value. gets smaller and smaller, eventually approaching zero.
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Question
As a body falls through air starting from rest, its velocity (don't ignore the air resistance)
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stays constant.
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continuously decreases.
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continuously increases.
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gets larger and larger, eventually reaching a constant value.
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gets smaller and smaller, eventually approaching zero.
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Expert Solution
Step 1
As an object falls through air, it usually encounters some degree of air resistance. Air resistance is the result of collisions of the object's leading surface with air molecules. The actual amount of air resistance encountered by the object is dependent upon a variety of factors. To keep the topic simple, it can be said that the two most common factors that have a direct effect upon the amount of air resistance are the speed of the object and the cross-sectional area of the object. Increased speeds result in an increased amount of air resistance. Increased cross-sectional areas result in an increased amount of air resistance.
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