A train crosses a pole in 8 seconds at the speed of 63 kmph. What is the length of the train ?
Let the length of train be 'l' meters.
Speed of train = 63 kmph.
=$$\frac{63\times5}{18}$$.
=$$17.5$$mps.
Time taken by train to cross the pole=$$\frac{l}{17.5}$$.
$$8=\frac{l}{17.5}$$.
$$l=140$$m.
Hence, Option A is correct.
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