Train is135m long average speed 120 kmh 50 seconds it passes through tunnel what is the length of the tunnel?
120 km/h = 120,000m/hr = 33.333 m/s
Distance travelled in 50 seconds = 33.333 * 50 = 1666.666
metres
Tunnel length = distance travelled - train length - 1666.666 -
135 = 1531.666metres