Answer:
B. 7.6 km/s
Explanation:
Given:
Speed of the satellite orbiting Earth is, [tex]v=17000\ miles/hour[/tex]
In order to convert the speed from miles/hour to km/s, we need to convert miles to km and hour to seconds.
The conversion factors are:
0.62 miles = 1 km
∴ 1 mile = [tex]\frac{1}{0.62}\ km[/tex]
1 hour = 3600 s
Now, 17000 miles/hour can be rewritten as:
[tex]17000\times \frac{1\ mile}{1\ hour}\\\\=17000\times \frac{\frac{1}{0.62}\ km }{3600\ s}\\\\=\frac{17000}{0.62\times 3600}\ km/s\\\\=7.6\ km/s[/tex]
Therefore, the speed in km/s is 7.6 km/s.
