Two cars are travelling towards each other at speed of 20 m s − 1 each. When the cars are 300 m apart, both the drivers apply brakes and the cars retard at the rate of 2 m s − 2 . The distance between

Question

Two cars are travelling towards each other at speed of 20 m s − 1 each. When the cars are 300 m apart, both the drivers apply brakes and the cars retard at the rate of 2 m s − 2 . The distance between them when they come to rest is :

TestHub · Accepted Answer

​ ​ u BA ​ ​ = 40 m / s ​ a BA ​ ​ = 4 m / s Apply ( v 2 = u 2 + 2 as ) relative ​ O = ( 40 ) 2 + 2 ( − 4 ) ( S ) S = 200 m Remaining distance = 300 − 200 = 100 m ​

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