Question

A train travelling at 120km/he goes through a tunnel 155m long. Calculate in seconds the time a passenger in train spend in the tunnel.

Answer 1

Explanation:

To calculate the time a passenger in the train spends in the tunnel, we need to determine the time it takes for the train to travel the length of the tunnel.

First, we need to convert the speed from kilometers per hour (km/h) to meters per second (m/s).

Speed in m/s = speed in km/h * (1000 m / 1 km) * (1 h / 3600 s)

Speed in m/s = 120 km/h * (1000 m / 1 km) * (1 h / 3600 s) = 33.33 m/s (approximately)

Next, we can calculate the time it takes for the train to travel through the tunnel by using the formula:

Time = Distance / Speed

Time = 155 m / 33.33 m/s = 4.65 seconds (approximately)

Therefore, a passenger in the train will spend approximately 4.65 seconds in the tunnel.