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In one hour, a satellite orbiting the Earth travels 1.1 x 10^7 m (meters). Which of the following is the best way to rewrite this quantity, using more appropriate units?A. 1.1 x 10^7mB. 1.1 x 10^4 kmC. 1.1 x 10^10 mmD. 1.1 x 10^9 cm

User Murat Mustafin
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The distance that a satellite orbits the Earth in one hour is of 1.1x10^7 m.

Due to this situation involves very long distance, it is much more convenient to use other units than meters. It is better to use a higher unit, as for example km. In this way the given distance of the trajectory of the satellite is better described, it's more simple and concatenated.

You know that 1 km = 1000m. This is the same that 1x10^3m = 1km. Thus, you can write the given distance in km units by proceeding as follow:


1.1*10^7m=1.1*10^4*(10^3m)=1.1*10^4\operatorname{km}

Hence, more appropriate units are km and the distance traveled by the satellite is 1.1 x 10^4 km

User Ralf Htp
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