Question

A 800m long trains running at the speed of 90kmph crosses a bridge in 25seconds than find the bridge length?

Answer 1

L = 800 m
V = 90 km/h = 90 × 5/18 m/s = 25 m/s
t = 25 s
x = v • t
x = 25 m/s × 25 s
x = 625 m
S = L + x = 1425 m.