Answer:
[tex]\boxed {\boxed {\sf 12 \ m/s}}[/tex]
Explanation:
Speed is equal to distance divided by time.
[tex]s=\frac{d}{t}[/tex]
The horse ran 1500 meters in 125 seconds.
[tex]d= 1500 \ m \\s= 125 \ s[/tex]
Substitue the values into the formula.
[tex]s= \frac{ 1500 \ m }{125 \ s}[/tex]
Divide.
[tex]s= 12 \ m/s[/tex]
The speed of the race horse is 12 meters per second.