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Mathematics, 02.03.2020 17:54 winnie45
We saw that a differential equation describing the velocity v of a falling mass subject to air resistance proportional to the instantaneous velocity is
m*dv/dt = mg-kv,
where k > 0 is a constant of proportionality.
The positive direction is downward.
a. Solve the equation subject to the initial condition v(0) = v0.
b. Use the solution in part (a) to determine the limiting, or terminal, velocity of the mass.
c. If the distance s, measured from the point where the mass was released above ground, is related to velocity v by ds/dt = v(t), find an explicit expression for s(t) if s(0) = 0.
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