A 160m long train crosses the river over a 290m bridge. How long does it take for a train

A 160m long train crosses the river over a 290m bridge. How long does it take for a train to cross the bridge at a constant speed of 18km / h

Given: Lp (own length of the train under consideration) = 160 m; Lm (length of the bridge over the river) = 290 m; V (speed of the train when crossing the bridge) = 18 km / h (in the SI system V = 5 m / s).

To calculate the duration of the movement of the train on the bridge over the river, we apply the formula: t = S / V = (Lm + Lp) / V.

Calculation: t = (290 + 160) / 5 = 450/5 = 90 s.

Answer: The train in question will need 90 seconds to cross the bridge over the river.