A spaceship ferrying workers to Moon Base I takes a straight-line path from the earth to the moon, a distance of 384000 km

A spaceship ferrying workers to Moon Base I takes a straight-line path from the earth to the moon, a distance of 384000 km. Suppose it accelerates at an acceleration 20.0 m/s2 for the first time interval 15.1 min of the trip, then travels at constant speed until the last time interval 15.1 min , when it accelerates at — 20.0 m/s2 , just coming to rest as it reaches the moon. (al What is the maximum speed attained? (13) What fraction of the total distance is traveled at constant speed?