On a two-lane road, car A is travelling with a speed of 36 km h^(-1). Two cars B and C approach car A in opposite directions with a speed of 54 km h^(-1) each. At a certain instant, when the distance AB is equal to AC, both being 1 km, B decides to overtake A before C does. What minimum acceleration of car B is required to avoid an accident ?

On a two-lane road, car A is travelling with a speed of 36 km h^(-1).

1.	On a two-lane road, car A is travelling with a speed of 36 km h^(-1). Two cars B and C approach car A in opposite directions with a speed of 54 km h^(-1) each. At a certain instant, when the distance AB is equal to AC, both being 1 km, B decides to overtake A before C does. What minimum acceleration of car B is required to avoid an accident ?
Answer» `1m//s^2` `2m//s^2` `3m//s^2` `4m//s^2` ANSWER :A