Answer:
2.5 km/min.
Explanation:
Hello!
In this case, when an object moves a certain distance and the elapsed time is analyzed, we can compute the average velocity it had for that displacement, which can be quantified as shown below:
[tex]v=\frac{d}{t}[/tex]
Whereas d stands for the distance, t for the time and v for the average speed. Thus, since the mentioned helicopter took 8 minutes to travel 20 km, we can compute the average speed as shown below:
[tex]v=\frac{20km}{8min}\\\\v=2.5 km/min[/tex]
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