Question

A man covers 36 km in 1 hour. Find his speed in metres/sec.
[Hint. Required speed =
36 x 1000
1000)
m/sec = 10 m/sec.]
60 x 60​

Answer 1

Your Answer:

A man covers 36km in 1 hour

We know 1 hour = 60 minutes

$\tt So,\ \ he \ \ will \ \ cover \ \ in \ \ one \ \ 1 \ \ minute = \dfrac{36}{60}Km$

We know 1 minute = 60 seconds

$\tt So,\ \ he \ \ will \ \ cover \ \ in \ \ one \ \ 1 \ \ seconds = \dfrac{36}{60 \times 60}Km$

Now Converting the Kilometre in meter

We know 1 Km = 1000 m

$\rightarrow \tt So, \ \ he \ \ will \ \ cover \ \ in \\\\ \tt \ \ 1 \ \ seconds = [\dfrac{36}{60 \times 60} \times 1000] m \\\\ \rightarrow \tt \ So, \ \ he \ \ will \ \ cover \ \ in \\\\ \tt 1 \ \ seconds = [\dfrac{36}{6 \cancel{0} \times 6\cancel{0}} \times 10 \cancel{00}] m \\\\ \tt \rightarrow So, \ \ he \ \ will \ \ cover \ \ in \\\\ \tt 1 \ \ seconds = [ \dfrac{36}{36} \times 10] m \\\\ \tt \rightarrow So,\ \ he \ \ will \ \ cover \\\\ \tt 1 \ \ seconds = [\cancel{\dfrac{36}{36}} \times 10] m$

$\tt \rightarrow So,\ \ he \ \ will \ \ cover \ \ in \ \ one \ \ 1 \ \ seconds = 10m$

So, the speed is 10m/s

Answer 2

Answer:

$\huge\underline\bold\red{Answer!!}$

$distance = 36km=36000m \\ time=1hr \\ =60mins=3600 \\ speed = \frac{ distance}{time } \\ = \frac{36000}{3600} \\ =10m \: per \: second$

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