Question

A bus travels 54 km in 90 min. Calculate the speed of the bus in m/s.


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Answer 1

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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Answer 2

Explanation:

54 km = 54×1000=54000 m

90 min = 90×60=5400 seconds

speed = distance

time

= 54000

5400

= 10 m/s