Respuesta :

Answer:

70 m/s

Step by step explanation:

Step 1: gather your basic facts

distance: 7 km

time: 100 s

Step 2: use the formula of speed

[tex]speed=\frac{distance}{time}[/tex]

[tex]s=\frac{7000 m}{100 s}=70 m/s[/tex]