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Two cars A and B are moving in same dire...

Two cars A and B are moving in same direction with velocities 30 m/s and 20 m/s. When car A is at a distance d behind the car B, the driver of the car A applies brakes producing uniform retardation of `2m//s^(2)`. There will be no collision when :-

A

`dlt2.5`m

B

`dlt125`m

C

`dgt25`m

D

`dgt125`m

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The correct Answer is:
C
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