Respuesta :

speed= distance/time
5.8 m/s=406/70

1km = 100m 
1h= 3600s
(5.8m/s)(1km/100m)(3600s/1h)

Answer:

Average speed of the racer is 5.8 m/s.

Explanation:

Total distance covered by racer = D = 406 m

Total time taken racer= T = 70 seconds

The formula of an average speed is given by:

Average speed :

[tex]=\frac{\text{Total distance covered}}{\text{Total time taken}}=\frac{D}{T}[/tex]

Average speed of the racer is:

[tex]=\frac{406 m}{70 seconds}=5.8 m/s[/tex]