Train length 500 meters Tunnel length 500 meters Train speed 60 km / h Take the time to pass the tunnel.

The train time to complete the tunnel can be calculated using the formula:

t = S / V, where S is the distance traveled by the train, the last car must leave the tunnel (S = S1 + S2, where S1 is the length of the train (S1 = 500 m), S2 is the length of the tunnel (S2 = 500 m)), V – train speed (V = 60 km / h = 60 / 3.6 m / s).

Let’s calculate the time of passage of the tunnel:

t = (S1 + S2) / V = (500 + 500) / (60 / 3.6) = 3.6 * 1000/60 = 60 s = 1 min.

Answer: It will take the train 60 seconds or 1 minute to pass the tunnel.