Question

TRAIN MOVING AT SPEED OF 100KM\HR CROSSED A POLE IN 4 SECONDS LENGTH OF THE TRAIN

Answer 1

Answer:

Correct option is D)

v=60km/h=

3600

60×1000

m/s

t=9s

Length of the pole=vt

=

3600

60×1000

×9

=150m

Answer 2

Answer:

The answer is 111.11 m

Step-by-step explanation:

Given data

Speed of the train = 100 km/hr

To convert km/hr into m/sec multiply 100 km/hr with 5/18 m/sec

100 km/hr = 100 (5/18) m/sec = 500/18 m/sec

Time take by train to cross the pole = 4 sec  

here we need to find length of the train  

Length of the train = distance cover by train in 4 sec

As we know formula for distance    

= speed of the train × time taken by train to cross the pole

Therefore, length of the train =  $\frac{500(4)}{18}$  = 111.11 m