Question

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

With explaination
No spam ans
The best ans will be marked brainliest
Please do step by step explanation attach a pic if possible

Answer 1

Answer:

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 bridge)

Answer 2

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

So, x + 150 = 72km/h * 13s

72km/h in m/s:-

=> 72000m/3600s

=> 20m/s (speed of train)

Now,

x + 150m = 20m/s *13s

=> x + 150m = 260m

=> x = 260m - 150m

=> x = 110m (length of bridge)