Question

UNSULVCU NUMERILALS FOR PRACTICE
1. A 200 m long train crosses a 400 m long bridge with a speed of 36 km h. Calculate the time taken by the
train to cross the bridge.
Ans. 1 minute

.
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Answer 1

the lenth of the train=200m

the lenth of the brdge =400m

the speed of the train =36kmperhour

$= \frac{36 \times 1000m}{3600sec}$

$10mpersecond$

then the time taken by the train to cross the brdge is

$s = \frac{d}{t}$

$10mpersecd = \frac{400m}{t}$

$time = 40second$