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  2. Free fall - Wikipedia

    en.wikipedia.org/wiki/Free_fall

    Free fall. In classical mechanics, free fall is any motion of a body where gravity is the only force acting upon it. A freely falling object may not necessarily be falling down in the vertical direction. An object moving upwards might not normally be considered to be falling, but if it is subject to only the force of gravity, it is said to be ...

  3. Weightlessness - Wikipedia

    en.wikipedia.org/wiki/Weightlessness

    Michael Foale can be seen exercising in the foreground. Weightlessness is the complete or near-complete absence of the sensation of weight, i.e., zero apparent weight. It is also termed zero g-force, or zero-g (named after the g-force) [ 1 ] or, incorrectly, zero gravity. Microgravity environment is more or less synonymous in its effects, with ...

  4. Equations for a falling body - Wikipedia

    en.wikipedia.org/wiki/Equations_for_a_falling_body

    The first equation shows that, after one second, an object will have fallen a distance of 1/2 × 9.8 × 1 2 = 4.9 m. After two seconds it will have fallen 1/2 × 9.8 × 2 2 = 19.6 m; and so on. On the other hand, the penultimate equation becomes grossly inaccurate at great distances. If an object fell 10 000 m to Earth, then the results of both ...

  5. Einstein's thought experiments - Wikipedia

    en.wikipedia.org/wiki/Einstein's_thought_experiments

    Over the years, the story of the falling man has become an iconic one, much embellished by other writers. In most retellings of Einstein's story, the falling man is identified as a painter. In some accounts, Einstein was inspired after he witnessed a painter falling from the roof of a building adjacent to the patent office where he worked.

  6. Fall is the perfect time to exercise outdoors. Here's how to ...

    www.aol.com/lifestyle/fall-perfect-time-exercise...

    Here are some ideas on how to take advantage of the weather with outdoor activities in the fall. Go apple picking. Visit a pumpkin patch (bonus points if you load the heaviest pumpkin into your ...

  7. Terminal velocity - Wikipedia

    en.wikipedia.org/wiki/Terminal_velocity

    Based on air resistance, for example, the terminal speed of a skydiver in a belly-to-earth (i.e., face down) free fall position is about 55 m/s (180 ft/s). [3] This speed is the asymptotic limiting value of the speed, and the forces acting on the body balance each other more and more closely as the terminal speed is approached. In this example ...

  8. Graham technique - Wikipedia

    en.wikipedia.org/wiki/Graham_technique

    Joan Acocella, on Graham's "classic style" Graham technique is based on "contraction and release", and uses different parts of the body in opposition to one another to create spirals for dramatic tension. It also incorporates formal exaggerations of "natural" movements. Contraction and release The fundamental movement of Graham technique is the cycle between "contraction" and subsequent ...

  9. Free body diagram - Wikipedia

    en.wikipedia.org/wiki/Free_body

    In physics and engineering, a free body diagram (FBD; also called a force diagram) [1] is a graphical illustration used to visualize the applied forces, moments, and resulting reactions on a free body in a given condition. It depicts a body or connected bodies with all the applied forces and moments, and reactions, which act on the body (ies).

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