Question

A train 400 m long crosses an electric pole in 32 seconds. Find the speed of train in km/ hr?

Answer 1

Hi ,

Distance travelled = d = 400m

d = 400/1000 = 4/10 km

Time = t = 32 sec = 32 / (3600 )hr

t = 8 / 900 hr

Speed = d/t

S = ( 4/10 ) / ( 8 / 900 )

S = ( 4 × 900 ) / ( 8 × 10 )

s = 45 km / hr

I hope this helps you.

:)

Answer 2

Answer: hi ,

Length= 400m= 400/1000=4/10km

Time taken = 12 sec= 12/3600=1/300hr

Then, find speed=distance / time

= 400/10 ÷ 1/300

=400/10×300/1

=120km/hr

I hope it help you

Saurav , machli