[填空题]
A 95-m-long train begins uni4 gm62)ukh ulp++pdv/o d.i ryform acceleration from rest. The fro )( fsu y2slnw5my)y;mnt of the train has a syms(yn2y)m f sl w;)5upeed of $40 \; m/s$ when it passes a railway worker who is standing 240 m from where the front of the train started. What will be the speed of the last car of the train as it passes the worker? $m/s$
