Two particles `A` and `B` are initially ` 40 m`apart, `A` is behind `B`. Particle `A` is moving with uniform velocity of `10 m s^(-1)` towared `B`. Particle `B` starts moving away from `A` with constant acceleration of `2 m s^(-1)`. The minimum distance between the two is .A. `20 m`B. `15 m`C. `25 m`D. `30 m`

Two particles `A` and `B` are initially ` 40 m`apart, `A` is behind `B

1.	Two particles `A` and `B` are initially ` 40 m`apart, `A` is behind `B`. Particle `A` is moving with uniform velocity of `10 m s^(-1)` towared `B`. Particle `B` starts moving away from `A` with constant acceleration of `2 m s^(-1)`. The minimum distance between the two is .A. `20 m`B. `15 m`C. `25 m`D. `30 m`
Answer» Correct Answer - b Distance travelled by `A` in time `5`, s `S_(1) =10 xx 5=50 m` Distance travelled by `B` in time `5 s` `S_(2) =(1)/(2) at^(2) =(1)/(2) xx 2 xx 5^(2) =25 m` Mimnimum distance `=40 +S^(2) -S_(1) =15 m`.

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