A certain satellite orbiting Earth has a speed of about 17,000 miles/hour. What is its approximate speed expressed to the correct number of
significant figures in kilometers/second? One kilometer is about 0.62 mile, and there are 3,600 seconds in an hour.
A
2.9 km/s
B. 7.6 km/s
C. 38,000,000 km/s
D.
99,000,000 km/s

The answer to your question is the letter B. 7.6 km/s

Explanation:

Data

speed = 17,000 mi/h

Convert mi/h to km/s

Process

1.- Use a chart to do this conversion

-Multiply all the numerators and the denominators

-Divide the result

          speed = 7.6 km/s              

2.- Conclusion

17,000 mi/h are equivalent to 7.6 km/h

the answer is definitely c.