Question

A train 150 m long is running at 72 km/hr. It crosses a bridge in 13 seconds. Find the length of the bridge.​

Answer 1

We can solve using this equation:

(length of bridge + length of train) = speed of train * time to cross bridge

So:

x + 150 = 72km/h * 13s

Convert 72km/h to m/s => 72000m/3600s => 20m/s (speed of train)

Now, solve:

x + 150m = 20m/s *13s => x + 150m = 260m => x = 260m - 150m => x = 110m (length of brid

Answer 2

Answer:

plz refer to the attachment up.