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  2. Free fall - Wikipedia

    en.wikipedia.org/wiki/Free_fall

    The data is in good agreement with the predicted fall time of /, where h is the height and g is the free-fall acceleration due to gravity. Near the surface of the Earth, an object in free fall in a vacuum will accelerate at approximately 9.8 m/s 2, independent of its mass.

  3. Free-fall time - Wikipedia

    en.wikipedia.org/wiki/Free-fall_time

    The free-fall time is the characteristic time that would take a body to collapse under its own gravitational attraction, if no other forces existed to oppose the collapse.. As such, it plays a fundamental role in setting the timescale for a wide variety of astrophysical processes—from star formation to helioseismology to supernovae—in which gravity plays a dominant ro

  4. Galileo's law of odd numbers - Wikipedia

    en.wikipedia.org/wiki/Galileo's_law_of_odd_numbers

    From the equation for uniform linear acceleration, the distance covered = + for initial speed =, constant acceleration (acceleration due to gravity without air resistance), and time elapsed , it follows that the distance is proportional to (in symbols, ), thus the distance from the starting point are consecutive squares for integer values of time elapsed.

  5. Equations for a falling body - Wikipedia

    en.wikipedia.org/wiki/Equations_for_a_falling_body

    During the first 0.05 s the ball drops one unit of distance (about 12 mm), by 0.10 s it has dropped at total of 4 units, by 0.15 s 9 units, and so on. Near the surface of the Earth, the acceleration due to gravity g = 9.807 m/s 2 ( metres per second squared , which might be thought of as "metres per second, per second"; or 32.18 ft/s 2 as "feet ...

  6. Speed skydiving - Wikipedia

    en.wikipedia.org/wiki/Speed_skydiving

    The speed, achieved by the human body in free fall, is a function of several factors; including the body's mass, orientation, and skin area and texture. [1] In stable, belly-to-earth position, terminal velocity is about 200 km/h (120 mph). Stable freefall head down position has a terminal speed of 240–290 km/h (around 150–180 mph).

  7. Acceleration of free fall - Wikipedia

    en.wikipedia.org/?title=Acceleration_of_free...

    Acceleration of free fall. From Wikipedia, the free encyclopedia. ... Text is available under the Creative Commons Attribution-ShareAlike License 3.0; ...

  8. List of Olympic records in short-track speed skating - Wikipedia

    en.wikipedia.org/wiki/List_of_Olympic_records_in...

    Event Time Name Nation Games Date Ref 500 metres 39.584 Wu Dajing China (CHN) 2018 Pyeongchang: 22 February 2018 [1]1000 metres 1:23.042 Hwang Dae-heon South Korea (KOR)

  9. Felix Baumgartner - Wikipedia

    en.wikipedia.org/wiki/Felix_Baumgartner

    During this descent Baumgartner set the record for fastest speed of free fall at 1,357.64 km/h (843.6 mph), [2] [12] [5] making him the first human to break the sound barrier outside a vehicle. [ 38 ] [ 39 ] Baumgartner was in free fall for 4 minutes and 19 seconds, a fall time 17 seconds shorter than the record set during mentor Joseph ...