A 100 m long train crosses a bridge of length 200 m in 50 seconds with constant velocity. Find the velocity.

2 m / s

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4 m / s

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6 m / s

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5 m / s

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Solution

The correct option is D $6 m / s$
Lwt us consider the front end of train, So for train to cross the tunnel,
total distance = length of train + length of tunnel
$D i s t a n c e = 200 + 100 = 300 m$
$v e l o c i t y = \frac{d i s t a n c e}{t i m e}$
$\Rightarrow V = \frac{300}{50}$
$\Rightarrow 6 m / s$

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A 100 m long train crosses a bridge of length 200 m in 50 seconds with constant velocity. Find the velocity.

The correct option is D 6m/sLwt us consider the front end of train, So for train to cross the tunnel, total distance = length of train + length of tunnel Distance=200+100=300mvelocity=distancetime⇒V=30050⇒6m/s