Question

A 125 metre long train travels at 90 km/h. How much time would it take to cross a 175 metre long bridge?
please answer the question faster​

Answer 1

Answer:

$\tt 12 \: seconds$

Step-by-step explanation:

$\tt 90 \: km/h = \dfrac{90×1000}{3600} \: m/s$

$\tt = 25\: m/s$

using the formula,

$\boxed{\rm time= \dfrac{distance}{velocity}}$

$\tt t= \dfrac{175}{25}$

$\tt time = 7 \: seconds$

The train is 125 m long, so at 25 m/sec, it will take another 5 seconds (125/25) for the rear of the train to cross the 175 meter distance.

adding the original 7 seconds to 5 seconds results in 12 seconds.