Orbital motion

• what are satellites?


  Small objects that move around a larger project or body due to the force of gravity
• Difference between artificial satellite and natural satellite..

  -artificial= man made, orbit non stellar bodies
• Similarity between artificial satellite and natural..

  • both orbit a larger celestial body
• Geostationary satellites

  -orbit at high distance, have the same speed as earth (orbit every 24 hours)
• Weather satellite

  -are in a low earth orbit ( move around earth very quickly)
• The gravitational pull of the large body on the smaller object keeps them in circular orbit
• what happens to orbital velocity the further away a planet is from the sun?

  Slower
• What force keeps an object moving in a circle?

  centripetal force
• The direction of the planet motion is Always at a right angle to force of gravity exerted by the star