Question

A train travelling at 54 kmph crosses a man in 15 seconds. What is the length of the
train?
(a) 225 m
(b) 270 m
(c) 200 m
(d) 250 m
​ ANS- 225M

Answer 1

Given: A train travelling at a speed of 54km/h crosses a man in 15 seconds.

Need to find: Length of the train.

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★ Speed of the train in m/s,

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$:\implies\sf{54\times\dfrac{5}{18}}\\\\\\\\:\implies{\underline{\boxed{\textsf{\textbf{15\;m/s}}}}}{\;\bigstar}$

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★ Now, length of the train,

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$:\implies\sf{Speed\times Time}\\\\\\\\:\implies\sf{15\times 15}\\\\\\\\:\implies\underline{\boxed{\pink{\frak{Length=225\;m}}}}{\;\bigstar}$

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$\therefore\;{\underline{\sf{Hence,\;the\;length\;of\;the\;train\;is\;{\textsf{\textbf{225\;m}}}}.\;\{Option\;(a)\}}}$

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