Answer:
[tex]45\,\,km/h[/tex]
Explanation:
Given: [tex]12.5\,\,m/s[/tex]
To express: [tex]12.5\,\,m/s[/tex] into [tex]km/h[/tex]
Solution:
Use the following relations between [tex]m[/tex] and [tex]km[/tex], [tex]s[/tex] and [tex]h[/tex]
Here, [tex]m[/tex] denotes meter, [tex]km[/tex] denotes kilometer, [tex]s[/tex] denotes seconds and [tex]h[/tex] denotes hour.
[tex]1\,\,m=\frac{1}{1000}\,\,km[/tex]
[tex]1\,\,s=\frac{1}{3600}\,\,h[/tex]
Therefore,
[tex]12.5\,\,m/s=\frac{12.5(3600)}{1000}=45\,\,km/h[/tex]
