Answer:
0.67 km/min
Explanation:
The initial time, t₁ = 15 min
The initial position, d₁ = 5 km
The final time, t₂ = 30 min
The final position, d₂ = 15 km
The average speed is calculated as:
[tex]\begin{gathered} Avg\text{ speed = }\frac{d_2-d_1}{t_2-t_1} \\ \\ Avg\text{ speed = }\frac{15-5}{30-15} \\ \\ Avg\text{ spd = }\frac{10}{15} \\ \\ Avg\text{ spd = 0.67 km/min} \end{gathered}[/tex]
The automobile's average speed as it travels from a distance of 5 km to a distance of 15 km along the highway is 0.67 km/min
