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10 Cards in this Set

  • Front
  • Back
the upward force caused by the differences in air pressure above and below the wings
action force
the inital force exerted in a force pair
the push produced by the spinning propeller
the wheel
an invention that enabled people to accomplish more work with less effort and in a shorter amount of time
It also reduced friction.
the resistance to forward motion caused by the air
reaction force
the force exerted in response to an action force
Sir Isaac Newton
explained how the universe is held together using his theory of gravitation and laws of motion
spins around, pushing the air it comes in contact with backward
The Wright Brothers
flew the first plane at Kitty Hawk, North Carolina. Models tested in a wind tunnel helped them to discover that twisted propellers work better than flat ones.
the first to mount the front wheels on a movable platform so that a wagon could be turned to steer by its driver