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A spring-loaded cannon

6.) A spring-loaded cannon aimed at 47 degrees above the horizontal is on the last car of a long train of flat cars. The train has an initial velocity of 54.3 km/h. At the moment the train begins to accelerate forward at 0.325 m/s2 , the cannon fires a projectile at 180 m/s. The cannon points in the direction that the train is moving.
a.) What is the horizontal range observed by a person standing on the ground?
b.) How far on the train from the cannon does the projectile land? Neglect air resistance.