How many seconds will a 500m long train take to cross a man,walking with a speed of 3km/hr in the direction of moving train if the speed of the train is 63km/hr.
Relative speed=63-3=60km/hr=60*(5/18)=50/3
Length=500
Time=500/(50/3)=500*3/50=30s
Two trains 132m and 108m in length are running towards each other on parallel lines at the rate of 32km/hr and another at 40km/hr.In what time will they be closer to each other from the moment they meet?
A train 150m long passes a telegraph post in 12s.Find speed of the train.
A train is running at the rate of 40km/h. A man is also going in the same direction parallel to the train at a speed of 25km/hr. If the train crosses the man in 48s find length of the train.
How many seconds will a train 60m in length, travelling at the rate of 42km/hr take to pass another train 84m long, proceeding in the same direction at the rate of 30km/hr.
Length of two trains running in opposite directions are 170m and 190m repectively.If Speed of the first is 30km/hr and the second is 24km/hr,find in how many seconds will they meet?