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A rain drop starts falling from a cloud at a considerable height abov ethe surface of the earth During the fall of the, rain drop experiences retardation due to air resistance.The retardation is directly proportional to instantaneous speed of drop"" Find an expression for distance travelled"".

A rain drop starts falling from a cloud at a considerable height abov ethe surface of the earth During the fall of the, rain drop


experiences retardation due to air resistance.The retardation is directly proportional to instantaneous speed of drop"" Find an expression for distance travelled"".  

Grade:12

1 Answers

mohit yadav
54 Points
9 years ago

a=kv

dv/dt=kdx/dt

dv=kdx

integrating

v=kx        ,dx/dt=kx

   dx/x=kdt

   lnx=kt

    x=ekt   where k is  const

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