Question

3.A bus travels 54 km in 90 minutes . what is the speed of the bus in m/s.​

Answer 1

Solution:

Distance = 54km

Time = 90min = 1.5hr

Speed = ??

Speed = Distance/Time

Speed = 54/1.5

Speed = 36km/h

Converting km/h to m/s

5/18 × 36 = 10m/s.

Therefore, speed of the bus in m/ss is 10m/s.

Answer 2

Given :

A bus travels 54 km in 90 minutes .

To Find :

Speed of bus in m/s .

Solution :

$\longmapsto\tt{Distance\:(s)=54\:km=54,000\:m}$

$\longmapsto\tt{Time\:Taken\:(t)=90\:min=5400\:sec}$

Using Formula :

$\longmapsto\tt\boxed{Speed=\dfrac{Distance}{Time}}$

Putting Values :

$\longmapsto\tt{\dfrac{540{\cancel{00}}}{54{\cancel{00}}}}$

$\longmapsto\tt{\cancel\dfrac{540}{54}}$

$\longmapsto\tt\bf{10\:m/s}$

So , The Speed of the bus is 10 m/s .

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Speed : -

It is distance travelled by an object per unit time. It is a scalur quantity . Speed of an object is always positive.

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

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