Question

A train whose length is 60 metres is travelling at 40km/h in the same direction as a bus whose length is 20m.If the speed of bus is 80km/h and moving parallel to the train, calculate the time it takes the truck to overtake the train completely in seconds.

Answer 1

Relative speed = 80 − 40 = 40km/hr
40 × 1000 =11.11m/s
    3600
Distance = 60 + 20
             = 80m
Time = distance =  80    = 7.2 seconds
             speed     11.11