posted by Anonymous .
A person is cycling, parallel to a railway track, at a speed of 10 km/hr. A train travelling in the same direction at 46 km/hr, passes him in 22 seconds. Find the length of the train.
Vn = Vt-Vb = 46-10 = 36km/h.
Vn = 36km/h = 36000m/3600s. = 10 m/s =
Net velocity of train.
d = V*T = 10m/s * 22s = 220 m. = Length