Question

A ball of mass m is falling through air . Air friction has a value =-kv , where v is the velocity and k is constant . Find the velocity of the ball after time t
-kv is showing that the downward direction is taken as negative ​

Answer 1

Answer:

When the object reaches terminal velocity, its acceleration is a = 0 and the sum of all forces acting on the object is 0.

0 = mg - kvt, vt = mg/k.

Answer 2

Answer:

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Explanation:

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