Question

An artificial satellite is moving in a circular orbit of radius 36000km. Calculate it's speed if it takes 24 hrs to revolve around the earth

Answer 1

speed = dist./time
distance = 36000 km & time = 24 hrs
speed = 36000/24 km/hr.
I.e. speed = 1500 km/hr.

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!