Question

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.
​

Answer 1

Answer:

Distance covered by the satellite in 24 hours

s=2πr

=2×3.14×42250=265464.58 km

Therefore speed of satellite,

v=

time taken

distance travelled

=

24×60×60

265464.58

=3.07 km s

−1

Answer 2

Answer:

3.07km/s

Explanation:

Distance covered by the satellite in 24 hours= circumference of the circle with radius 42250km

circumference=2πr

=2×3.14×42250

=265464.58 km

distance = 265464.58 km

time=24hrs

speed = distance traveled/ time taken

=265464.58/24×60×60 [60×60 --> to convert hour into seconds]

=3.07km/s

Hope u understood.. :)