Question

A 140metre long train passes a pole in 12 seconds. what is the speed of train

Answer 1

Find the distance in km:

Distance = 140 m = 0.14 km

Find the time in hour:

Time = 12 sec = 12/3600 hour = 1/300 hour

Find the speed:

Speed = Distance ÷ Time

Speed = 0.14 ÷ (1/300) = 42 km/h

Answer: The speed is 42 km/h

Answer 2

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Given:-

TIME:- 12 second

DISTANCE:-140 metre

Change into Particular form;

=)140/1000=)0.14

===================

Time:- 12 Second

12/3600

=)1/300

ACCORDING TO THE QUESTION;

Speed=0.14÷1/300

=)0.14×300

=)14/100×300

=/)14×3

=)42 km/hr

Thanks!!!