What is a typical constant for air resistance in relation to velocity?

AI Thread Summary
Air resistance can be proportional to velocity or velocity squared, depending on the scenario. For a baseball at sea level, the drag coefficient (k) is typically around 0.5, influenced by the object's shape and texture. The formula D = 1/2 * C * A * ρ * v^2 is used to calculate drag force, where C is the drag coefficient. A resource was shared for further reference on drag coefficient values. Understanding these constants is crucial for accurate calculations of air resistance.
BigStelly
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Hey I am just wondering about something, air Resistance is proportional to the velocity in some cases or velocity squared in others.

dV/dt=kv what is a typical constant for k, i know it varies so let's just say a baseball at sea level(im sure you all can guess why I am asking this... :smile: ) Also is there a way to calculate this "k"...
any help greatly appreciated thanks!
 
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It depends very much on the shape and texture of objects, if you use the formula D = \frac{1}{2}CA\rho v^2. For a spherical body like the baseball it should be around 0.5.
Have a look here also: http://www.ac.wwu.edu/~vawter/PhysicsNet/Topics/Dynamics/Forces/DragCoeficientValues.html for a table of constants.
 
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