a particle was moving in the positive x directions has a velocity v. the particle undergoes retardation kv2.where
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The velocity of the particle as function of time is given as v = v₀/(1 + kv₀t)
Explanation :
Given the retardation of the particle ,
a = -kv²
=> dv/dt = -kv²
=> dv/v² = -kdt
integrating both the sides we get,
-1/v = -kt + C
or
1/v = kt + C
Given at initial condition, t = 0 and v = v₀
putting these values in the above equation,
1/v₀ = 0 + C
=> C = 1/v₀
putting the value of C in the above equation,
1/v = kt + 1/v₀
=> 1/v = (1 + kv₀t)/v₀
=> v = v₀/(1 + kv₀t)
Hence the velocity of the particle as function of time is given as v = v₀/(1 + kv₀t)
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