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3 years ago

Calculate the speed in m/s at which the moon revolves around the Earth. Note: the orbit is nearly circular.

2 answers:

7 0

The moon is 384,000 km away from the Earth. It revolves around the earth in 27.3 days. (pi = 3.14)

Speed is rv = r 2pi/T

v = 384,000 2pi/27.3 * 86400

= 27.9 km/s

Good luck :)

iren2701 [21]3 years ago

4 0

Answer:

It is 7850 m/s

Explanation:

The orbital velocity is given by

$v = \sqrt{\frac{GM}{r}}$

where, G be the universal gravitational constant, M be the mass of earth and r be the distance of moon from earth.

$G = 6.67\times 10^{-11} Nm^{2}/kg^{2}, M = 5.98\times 10^{24}kg, r = 6.47\times 10^{6}m$

$v = \sqrt{\frac{6.67\times 10^{-11}\times 5.98\times 10^{24}}{6.47\times 10^{6}}}$

v = 7850 m/s

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