Two cars left place A simultanecously and reached the place B in 2 hrs. The first 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.

Options

A. `36 km//hr^(2)`
B. `18 km//hr^(2)`
C. `72 km//hr^(2)`
D. `144 km//hr^(2)`

Answer

A