Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
lift
|
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
|
|
|
thrust
|
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. |
|
|
drag
|
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
|
|
|
propeller
|
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.
|
|
|
Celts
|
the first to mount the front wheels on a movable platform so that a wagon could be turned to steer by its driver
|
