please help and explain!

QUESTION 2 A spacecraft starts from rest, and makes a journey to a destination 112000 km from its starting point. It does so by accelerating at a constant rate of 16.39 m/s^2 up to the midpoint of the journey, and then decelerates at the same constant rate of 16.39 m/s^2 for the second half of the journey, ending at rest. How long did the entire journey take? (0 hr 57 min O1 hr 27 min O1 hr 2 min O1 hr 54 min