here we have to calculate the time taken by a Racehorse to cover a distance of 400 metre
as per the question the speed of the horse is 20 m/s
hence we have speed[V] = 20 m/s
the distance covered [S]=400 m
the relation between distance,time and the speed is given as
[tex]distance= speed *time[/tex]
[tex]S= v*t[/tex]
[tex]t=\frac{S}{v}[/tex]
=[tex]\frac{400m}{20 m/s}[/tex]
=20 second
hence the time taken by the horse is 20 second [ans]
