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science

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What is the average speed of a satellite given the following information.

1) The earth's radius = 6000 km

2) The satellite is 900 km from the earth's surface

3) The satellite's orbital period: 2 hours

4) Circumference = 2pr (p = 3.14)

A)

6 km/s

B)

10 km/s

C)

5 km/s

D)

8 km/s

  • science - ,

    r earth = 6,000 km
    d satellite from earth = 900.
    r satellite's orbit = 6900 km

    2*pi*r = circumference = distance traveled around earth.

    distance/2 = speed satellite in km/hr

    d/hr x (1 hr/60 m) x (1 min/60 s) = ? km/s

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