Description
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A resistive (drag) force is a velocity-dependent force which acts opposite the direction of an object’s velocity. Applying Newton’s second law to an object experiencing a resistive force results in a differential equation for velocity. The differential equation can be solved to find the object’s velocity as a function of time. The velocity function can then be used to find the object’s acceleration and position as functions of time through differentiation and integration, respectively. The functions are exponential and have asymptotes that are determined by the initial conditions and the forces exerted on the object.
Sections:
00:00 - Intro
01:49 - Finding the acceleration function
05:02 - Intuition behind the acceleration function
07:34 - Finding the position function intuitively
09:58 - More about drag force
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