Answer:
1) Speed in m/s equals 22.22 m/s.
2) Speed in miles per hour equals 49.712 mph.
Explanation:
Since we know that in 1 kilometer there are 1000 meters and in 1 hour there are 3600 seconds hence we can write
[tex]80km/h=\frac{80\times 1000m}{3600s}=22.22m/s[/tex]
Now we know that 1 mile equals 1.609 kilometer hence we conclude that 1 kilometer equals [tex]\frac{1}{1.609}=0.6214[/tex]mile
Hence
[tex]80km/h=\frac{80\times 0.6214miles}{1h}=49.712mph[/tex]
