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Question
A train 150 meter long and running at a speed of 60 km per hour takes 30 seconds to cross a bridge. what is a length of the bridge?
450 meter
500 meter
350 meter
650 meter
ANSWER : 3
Descrption
<p>Velocity, v = 60 kmh<sup> - 1</sup></p> <p style = "padding - left: 80px;">or, (60*1000)/3600 ms<sup> - 1</sup></p> <p style = "padding - left: 80px;">or, 16.67 ms<sup> - 1</sup></p> <p>Time, t = 30 s</p> <p>We know, Distance, S = vt</p> <p>or, S = 16.67*30</p> <p>or, S = 500m</p> <p>Here, length of the train is 150 m.</p> <p>So, the length of the bridge is 500 - 150 = 350 m</p> <p>Ans: 350 m</p>
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