A train $140$ m long passes a telegraph post in $14$ sec. Find its speed in km/hr .

36

km/hr

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56

km/hr

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44

km/hr

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51

km/hr

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Solution

The correct option is A $36$ km/hr
Given, Distance $= 140$ $m = 0.14$ $k m$ ,
Time $= 14 s e c = \frac{14}{3600} h r$
$∴$ Speed $= \frac{D i s t a n c e}{T i m e} = \frac{0.14}{14} \times 3600$

$= 36$ $k m / h r$ .

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A train 140 m long passes a telegraph post in 14 sec. Find its speed in km/hr .

The correct option is A 36 km/hrGiven, Distance=140 m=0.14 km, Time =14sec=143600hr∴ Speed =DistanceTime=0.1414×3600 =36 km/hr.

A train $140$ m long passes a telegraph post in $14$ sec. Find its speed in km/hr .

The correct option is A $36$ km/hr
Given, Distance $= 140$ $m = 0.14$ $k m$ ,
Time $= 14 s e c = \frac{14}{3600} h r$
$∴$ Speed $= \frac{D i s t a n c e}{T i m e} = \frac{0.14}{14} \times 3600$

$= 36$ $k m / h r$ .