Question

A train is running at the speed of 54km/hr it cross a pole 21sec find the length of the train​

Answer 1

Answer:

Que -

A train is running at the speed of 54km/hr it cross a pole 21sec find the length of the train?

Ans -

Time taken by train to cross lamp post = 20sec

Speed of train = 54km/hr

$⇒54 \times \frac{1000}{3600}$

Speed = 15 m/s

length of train = speed × time

$\frac{15m}{s} \times 20s$

⇒300m

∴ Length of train = 300m.