An electric train is moving with a velocity of $120\, km h^{-1} .$ How much distance will it corer in $30 \,s$ ?
An electric train is moving with a velocity of $120\, km h^{-1} .$ How much distance will it corer in $30 \,s$ ?
Given $v=120 km h ^{-1}, t=30 s =30 / 3600 h$
$=1 / 120 h$
Now, $S =v \times t=120 \times 1 / 120=1 km$
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