Question

A train travelling at a uniform speed takes 10 hour to cover a distance of 1200 km. Express its speed in kilometre per hour and metre per second

Answer 1

Answer:

speed in km per second is 120km/h and in m /sec is 27.78 m/sec

Answer 2

Given:

Time = 10 hour

Distance = 1200 km

To find:

• The speed of the train in km/h.
• The speed of the train in m/s.

Solution:

Time = 10 hour.

Distance = 1200 km.

We know that,

$Speed = \dfrac{Distance}{Time}$

$=\dfrac{1200}{10}$

= 120 km/h

∴ The speed of the train is 120 km/h.

The speed of the train in m/s _

120×(5/18)

= (120×5)/18

= (20×5)/3

= 100/3

$=33\dfrac{1}{3} m/s$

∴ The speed of the train is $33\frac{1}{3}$ m/s.

Answer:

          The speed of the train is 120 km/h.

          The speed of the train is $33\frac{1}{3} m/s$