Question

a train takes 4 sec to pass a telegraph post and 20 sec to pass 264m long bridge. let us find the length of the train and also its speed.​

Answer 1

Answer:

length of the train=x

speed...: =v

time to cross thepost=x/v=4 sec

time to cross the bridge=(x+264)/v=20 See

solving these get v=264/16=16.5 m/sec

and also x=66m

Here speed is 16.5 ml sec

and length of train66m.

Answer 2

your answer is 66m and speed is 59.4 km/hr