Please answer all parts of the question.

An airplane flies eastward and always accelerates at a constant rate. At one position along its path, it has a velocity of 28.7 m/s. It then flies a further distance of 43700 m, and afterwards, its velocity is 40.7 m/s . Find the airplane's acceleration. acceleration: m/$ 2 Calculate how much time elapses while the airplane covers those 43700 m. elapsed time: S