Example 9: A train 400 m long is running at a speed of 72 km/hr. How much time does it
take to cross a telegraph post?
ion in motres Hence we shall convert its speed in m/sec.
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Answer:
it takes 20 second to cross a telegraph post.
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A train 400 m long is running at a speed of 72 km/hr. How much time does it
take to cross a telegraph post?
ion in motres Hence we shall convert its speed in m/sec.
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