Question

4. A train passes a pole in 15 seconds. If the speed
of train is 25 m/s, the length of the train is:
a) 280 m
b) 300 m
c) 375 m
d) 360 m

Can anyone please explain this question..Please​

Answer 1

Solution

Given:-

• Time (T) = 15 sec.
• Speed (S) = 25m/s

Find :-

• Length of train

Explanation

Using Formula

$\boxed{\boxed{\underline{\tt{\orange{\:Speed\:=\:\dfrac{Distance}{Time}}}}}}$

Here,

Distance denote for length of train.

So, Now

==> Distance = Speed × Time

==> Distance = 25 × 15

==> Distance = 375 m²

Hence

• Your answer will be option Number be (c).

____________________

Note Some Point.

• If here speed given in km/h & Time given in second so,in this case we change of all in m/s form .
• For change we multiply by (5/18 )m/s in speed .

___________________

Answer 2

To Find :-

• The length of the train

Solution :-

❍Here, we are given that,

• Time taken, t = 15 sec
• Speed, s = 25m/s

❍We know that :-

$:\implies\sf Speed =\dfrac{Distance}{Time}$

$:\implies\sf Distance= Speed \times Time$

❍ Putting the given values :-

$:\implies\sf Distance= Speed \times Time \\\\\\:\implies\sf Distance= 25 \times 15 \\\\\\:\implies{\underline{\boxed{\frak{\pink{Distance= 375\;m}}}}}\;\bigstar$

$\therefore{\underline{\sf{Hence,\; Length\; of \; the \; train\; is\; \bf{ 375\;m}.}}}$

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