An object falls freely in a straight line and experiences air resistance proportional to its speed this means its acceleration

Question

An object falls freely in a straight line and experiences air resistance proportional to its speed this means its acceleration is a t kv t where k is a positive constant and v is the object s velocity The speed of the object decreases from 1200 ft s to 1100 ft s over a distance of 1400 ft Approximate the time required for this deceleration to occur Hint Note that a t v t and v t x t Write the velocity of the object as a function of time v t XXX

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