The length of a bridge in meters, which a train 110-meters long and traveling at 45 km/hr can cross ...

The length of a bridge in meters, which a train 110-meters long and traveling at 45 km/hr can cross in 30 seconds is?

Answer/Solution

265

Steps/Work

45 km/h = 45000 m/3600 s = 12.5 m/s
In 30 seconds, the train can go 30(12.5) = 375 meters
Let x be the length of the bridge.
x+110 = 375 meters
x = 265 meters
The answer is B.

Physics Calculator / Auto Solver

The length of a bridge in meters, which a train - meters long and traveling at km / hr can cross in seconds is?

Calculated Answer

265

Step by Step Solution

In order to solve problem, you must evaluate n₂ * (n₁ * 1000) / 3600 - n₀.

n₀ =	110
n₁ =	45
n₂ =	30

n₂ * (n₁ * 1000) / 3600 - n₀
Evaluate n₁ * 1000 = 45000
n₂ * 45000 / 3600 - n₀
Evaluate 45000 / 3600 = 12.5
n₂ * 12.5 - n₀
Evaluate n₂ * 12.5 = 375
375 - n₀
Evaluate 375 - n₀ = 265
265
The answer to the problem and the result of n₂ * (n₁ * 1000) / 3600 - n₀ is 265

Quiz

Answer/Solution

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