What is Orbit?

• What is an orbit?

  The curved path of one celestial object around another
• What celestial objects can be involved in orbits?

  Earth, sun, moon, and spacecraft
• Why do objects orbit instead of flying off in a straight line?

  Due to the gravitational pull of massive objects
• What does Newton's first law state about an object's motion?

  An object will continue at its velocity unless acted upon
• If the moon travels at $1023 \text{ m/s}$, what is this speed called?


  Instantaneous velocity
• What effect does Earth's mass have on the moon?

  It exerts a strong gravitational pull on the moon
• How does the moon's momentum affect its orbit?

  It prevents the moon from being pulled in completely
• What happens to the moon's direction due to Earth's gravitational force?

  It constantly changes direction while orbiting
• How does velocity differ from speed?

  Velocity includes both speed and direction
• What does a change in velocity indicate?

  It indicates acceleration
• Why is the moon considered to be accelerating?

  Because its direction is constantly changing
• What are the two key factors that result in a steady orbit?

  • Instantaneous velocity of the orbiting object
  • Gravitational pull of the larger object
• What happens if the moon's orbit is pulled in closer to Earth?

  The gravitational force will increase significantly
• What must the moon do to maintain a stable orbit if it gets closer to Earth?

  It must travel much faster
• What is the relationship between the size of an object's orbit and its speed?

  • Smaller orbit requires faster travel speed
  • Larger orbit allows for slower travel speed
• What happens if an object does not travel fast enough in a smaller orbit?

  It will be pulled into the object it orbits
• What should you do if you enjoyed the video?

  Like and subscribe to the channel
• What is gravitational pull?

  The attractive force between two masses
• What is momentum in the context of celestial objects?

  The product of mass and velocity
• How does gravitational force affect celestial bodies?

  It influences their motion and orbits
• How do Newton's laws apply to orbital mechanics?

  They explain the motion of orbiting objects
• What is the difference between instantaneous velocity and average speed?

  Instantaneous velocity is speed at a specific moment
• What is a stable orbit?

  An orbit where an object maintains its path