Question

10. An artificial satellite is moving in a circular orbit of radius
42250 km. Calculate its speed if it takes 24 hours to revolve
around the earth.
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Answer 1

Answer:

speed=distance÷time

=2π42250÷24

=2×22/7×42250÷24 km/ hour

This is your answer

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Answer 2

Answer:

R = 4.225 * 10E7 m

S = 2 pi R = 2.655 * 10E8 m    distance traveled in 1 revolution

t = 24 hr * 60 min/hr * 60 sec/min = 86400 sec

v = S / t = 2.655 * 10E8 / 86400 = 3073 m/s