Q1. In a 100m track event, the time taken by four runners is 10 sec., 10.2 sec., 10.4 sec and 10.6 sec. Find the ratio of their speed.

distance (s)=100mtimeT₁=10T₂=10.2T₃=10.4T₄=10.6by v=[tex] \frac{s}{t} [/tex]we getV₁=[tex] \frac{100}{10}[/tex]V₁=10m/sV₂=[tex] \frac{100}{10.2} [/tex]V₂=9.8m/sV₃=[tex] \frac{100}{10.4} [/tex]V₃=9.61 m/sV₄=[tex] \frac{100}{10.6} [/tex]V₄=9.43 m/sV₁:V₂:V₃:V₄ = 10 : 9.8 : 9.61 : 9.43