Question

An artificial satellite is moving in a circular orbit of radius 44000km . Calculate its speed in Km/s , it takes 24 hours to revolve around the earth​

Answer 1

Answer: you can substitute the values

3.07 km s−1

Explanation:

Distance covered by the satellite in 24 hours

s=2πr

  =2×3.14×42250=265464.58 km

Therefore speed of satellite,

v = distance travelled / time taken ​

= 24×60×60265464.58​

=3.07 km s−1

hope it helps :)

Answer 2

Answer:

3.07 km/s

Explanation:

Given:

• Radius of the circular orbit = 44000 km
• Time taken to revolve around the earth = 24 hours

To find:

• Speed of the artififcial satellite in km/s

Distance of the circular orbit = $2 \pi r$

Distance of the circular orbit =$2 \times 3.14 \times 44000$

Distance of the circular orbit =$6.28 \times 44,000$

Distance of the circular orbit = 2,76,320 km

Time taken in seconds = $24 \times 60 \times 60$

Time taken in seconds = 86400 seconds

Speed = $\frac{Distance}{Time}$

Speed = $\frac{276320}{86400}$

Speed = 3.07 km/s

The speed of the artificial satellite is equal to 3.07 km/s