Question

speed of 45km/h of train 130 mt long traib cross the pull in30 sec .find the length of pull​

Answer 1

45km/h=45×5/18m/s

speed=12.5m/s

time=30sec

distance=length of the pull+length of train=speed×time

x+130=12.5×30

x+130=375. =}X=375-130

length of the pullx=245m