Question

an artificial satellite is moving in a circular orbit of radius 42250 km .calculate it's speed if it takes 24 hours to revolve around the earth.

Answer 1

so , easily first we find the circumference of orbit so , c=265571.429 .
Then to find its speed we use formula speed = distance / time
so , the speed of satellite is 11065.4762 Km per hour

Answer 2

Hey there!

Given,

Radius (r) = 42250 km

Time (t) = 24 hours

Distance will equal to perimeter of the orbit

= 2πr

= 2π * 42250

Speed of artificial satelite  

= 2π * 42250/24

= 11059 km/h

Hope It Helps You!