A train started from rest and moved with constant acceleration. At one time it was traveling 28 m/s, and 130 m farther on it was traveling 56 m/s. Calculate (a) the acceleration, (b) the time required to travel the 130 m mentioned, (c) the time required to attain the speed of 28 m/s, and (d) the distance moved from rest to the time the train had a speed of 28 m/s. (a) Number Units (b) Number Units v (c) Number i Units v (d) Number Units