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10 Cards in this Set
- Front
- Back
lift
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the upward force caused by the differences in air pressure above and below the wings
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action force
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the inital force exerted in a force pair
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thrust
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the push produced by the spinning propeller
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the wheel
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an invention that enabled people to accomplish more work with less effort and in a shorter amount of time
It also reduced friction. |
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drag
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the resistance to forward motion caused by the air
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reaction force
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the force exerted in response to an action force
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Sir Isaac Newton
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explained how the universe is held together using his theory of gravitation and laws of motion
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propeller
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spins around, pushing the air it comes in contact with backward
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The Wright Brothers
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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.
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Celts
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the first to mount the front wheels on a movable platform so that a wagon could be turned to steer by its driver
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