The speed of falling rain is the same 10 m above ground as it is just before it hits the ground. What does this tell you about whether or not the rain encounters air resistance?
William AudyThe rain must be encountering air resistance or it would accelerate.
Air resistance, also known as drag, is related to an object's speed; when an object is moving quickly enough that the force of gravity equals the resistance from drag, we say that the object is traveling at terminal velocity. The force of gravity will cause an acceleration unless there is another force to balance it. In this case, the only other force that must be from air resistance.
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Elena AlbarranThis tells us that rain encounters negligible air resistance during its fall.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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