Flight

Flight: how it works

• principles:
  • gravity pulls or attracts mass (anything with weight) towards the center of the earth
    • i.e., towards the ground
  • air has weight
  • air molecules and elements are diffuse (spread out)
    • thus the atmosphere is not compacted by gravity
    • it is more dense closer to the ground than higher up
    • objects can push through air molecules and elements
      • similarly to objects going through water

Related concepts

• vacuum and suction
• gravity
  • terminal velocity
• bullets and gravity
  • two bullets held at the same level, one by hand, the other in a gun
  • they both are released simultaneously
  • which hits the ground first?
    • gravity acts on both equally, so they fall at the same time
      • actually the dropped bullet, as the earth is round, so the curvature of the earth would make the distance of the bullet fired in a straight line farther than the bullet dropped to the ground