Question

What will be the speed of body in m/s and km /hr if it travels 40 kms in 5hrs

Answer 1

40×1000÷5×60×60

40/5hrs

Answer 2

$\underline\textbf{Answer}$

In km /hr = > 8km /hr .

In m /s = >2.22 m /s

$\underline\textbf{Speed in km / hr}$

= > Distance (s) = 40km.

= > Time (t) = 5hrs .

= >Speed = $\dfrac{Total \: distance}{Total \:time}$

= > Speed = $\dfrac{40 km}{5 hrs}$

= > 8 km /hr .

$\underline\textbf{Speed in m /s}$

40km = 40 × 1000 m = 40,000

5 hrs = 5 × 60 × 60 sec.

$\dfrac{40 × 1000 m}{5 × 60 × 60}$

$\dfrac{80 m}{36s}$

= > 2.22m /s