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Rise of an object-Physics (Posted on 2003-04-01) Difficulty: 3 of 5
If a 7kg object is thrown straight upwards at a speed of 10m/s(meters per second)

To what height will it rise? note: gravitational constant = -9.8m/s

See The Solution Submitted by Lucifer    
Rating: 3.2308 (13 votes)

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Solution I think | Comment 12 of 16 |
(Calculations assume the presence of a vacuum)

Because a vacuum is present, the object's mass is neglected.  After the first second of travel the object has traveled 5 m (d=(1/2)at^2).  Then the object will travel for another .1 m (because it has decreased to a speed of .2 m/s, and applying that to d=(1/2)at^2 will yield .1 m) and then begin to fall.  Thus the object will travel to a height of 5.1 m.

  Posted by logischer Verstand on 2004-04-11 23:16:29
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