Two cars left place A simultanecously and reachedthe place B in 2 hrs. Thefirst car travelled half the distance with a speed of 30 km/hr and the other half at a speed of 45 km/hr. The second car at the same time covered the entire distance with a constant acceleration starting from rest . Find the acceleration of the second car.

Two cars left place A simultanecously and reachedthe place B in 2 hrs.

1.	Two cars left place A simultanecously and reachedthe place B in 2 hrs. Thefirst car travelled half the distance with a speed of 30 km/hr and the other half at a speed of 45 km/hr. The second car at the same time covered the entire distance with a constant acceleration starting from rest . Find the acceleration of the second car.
Answer» `36 km//hr^(2)` `18 km//hr^(2)` `72 km//hr^(2)` `144 km//hr^(2)` ANSWER :A