A body is moving with uniform retardation covers 3km before its speed is reduced to half of its initial value comes to rest in another distance of?

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A body is moving with uniform retardation covers 3km before its speed is reduced to half of its initial value comes to rest in another distance of?

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A body is moving with uniform retardation covers 3km before its speed ...

Let initial v be V

so final = v/2

from eq of motion = v ka square - u ka square = 2as

v/2 ka whole square - v ka square = 2a * 3

after it come to rest final be v = 0

initial become v/2

so from eq of motion = v ka square - u ka square = 2as

0 ka square - v /2 ka square = 2as

0 ka square - v/2 ka whole square = 2as

divide both eq

u will get s/3 = 1/3

so s = 1 km

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