Question

The distance between the house and the school of boy is 3.6 km if he takes
6 min to reach his school by car, calculate
his speed in m/s
and also express is
speed in km/h.​

Answer 1

Answer:

3.6km=3600 m

6min=360 secs

so, speed is 3600/360 which is equal to 10 metre /sec

and now multiply 10m/s by 18/5 to convert it into km/h

which is= 36 km/h

Answer 2

$\huge\sf\pink{Answer}$

☞ Speed = 36 km/h or 10 m/s

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$\huge\sf\blue{Given}$

✭ Distance between school & house is 3.6 km

✭ Time (t) = 6 min

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$\huge\sf\gray{To \:Find}$

◈ Speed in km/h & m/s?

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$\huge\sf\purple{Steps}$

Speed of a body is given by,

$\sf \underline{\boxed{\sf Speed =\dfrac{Distance}{Time}}}$

◕ Distance = 3.6 km

◕ Time = 6/60 = 0.1

Substituting the given values,

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

➝ $\sf Speed = \dfrac{3.6}{0.1}$

➝ $\sf \red{Speed = 36 \ km/h}$

As asked in the Question we had calculated the speed in km/h so now we shall convert it to m/s

➳ $\sf \dfrac{36 \times 1000}{60\times 60}$

➳ $\sf \dfrac{36000}{3600}$

➳ $\sf \orange{Speed = 10 \ m/s}$

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☯ $\underline{\sf Know \ More}$

☆ Speed is a scalar quantity that is it has only magnitude and no direction

☆ SI unit of speed is m/s

☆ Avg Speed = Total Distance/Total Time

☆ To convert from km/h to m/s we can simply multiply the speed with 5/18

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