Question

1 point
A train of length 180 m is
moving with a constant speed
of 6 m/s. The time taken by the
train to cross a railway signal
is
O 5s
30 s
15 s
18s​

Answer 1

Option (B) 30 seconds

To Find :-

• The time taken by the train to cross a railway signal.

Solution :-

Given,

• Distance (d) = 180 m
• Speed (s) = 6 m/s

Applying speed formula, we get ;

Speed = Distance / Time

[ Put the values ]

↪ 6 = 180/Time

↪ Time = 180/6

↪ Time = 30 sec

Therefore,

The time taken by the train to cross a railway signal is 30 seconds.

Answer 2

$\LARGE{ \underline{\underline{ \sf{Required \: answer:}}}}$

GiveN:

• Length of the train = 180 m
• Constant speed of the train = 6 m/s

To FinD:

• Time taken to cross the electrical signal?

Step-by-Step Explanation:

When a speeding train crosses an object very small in width as comparison to the train, the distance travelled is the own train's length. Like a pole or a man or an electrical signal.

Distance covered by the train = 180 m

Speed of the train = 6 m/s

We know that,

$\overline{\boxed{ \rm{time = \frac{distance}{time} }}}$

Now plugging the values to get the time taken:

⇒ Time taken by the train = 180 m / 6 m/s

⇒ Time taken = 30 s

Hence, the correct option is 30s (B)