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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 . If the common definition of the word "fall" is used, an object moving upwards is not considered to be falling, but using scientific definitions, if it ...
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
Based on wind resistance, for example, the terminal velocity of a skydiver in a belly-to-earth (i.e., face down) free-fall position is about 195 km/h (122 mph or 54 m/s). [3] This velocity is the asymptotic limiting value of the acceleration process, because the effective forces on the body balance each other more and more closely as the ...
For a more complex example involving observers in relative motion, consider Alfred, who is standing on the side of a road watching a car drive past him from left to right. In his frame of reference, Alfred defines the spot where he is standing as the origin, the road as the x-axis, and the direction in front of him as the positive y-axis.
The relevant points to the entire presentation are put on slides, and accompany a spoken monologue. Slide shows have artistic uses as well, such as being used as a screensaver, or to provide dynamic imagery for a museum presentation, for example, or in installation art. David Byrne, among others, has created PowerPoint art. Slide shows have ...
On May 22, 1984, an accident occurred on The Edge, a first generation Freefall ride at Marriott's Great America (now Six Flags Great America) in Gurnee, Illinois.A supporting cable snapped, and the mechanism's anti-rollback devices failed to stop the car from plummeting nearly 60 feet to the bottom of the tower.
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