a train crossed 2 men in 9 seconds and 10 seconds who are running in same direction with train at the speed of 6m/s & 9m/s respectively. find out the train's length.
Train Time to cross the running man = train length / relative velocity...time to cross a standing man or pole = train length / velocity of train.....in the 1st case relative velocity = train speed minus man speed , because train and man travelling in same direction....still need more explanation??
Plz add the formula for this question