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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 Puzzle Solution | Comment 15 of 16 |
(In reply to Answer by K Sengupta)

Let the initial velocity be u. When the object rises to the desired height (h), the velocity at that instant is 0.

In terms of the formula: v^2 = u^2 + 2*g*h, we have:
v=0, u=10, g= -9.8

Accordingly, h = (10^2)/(2*9.8) ~ 5.1

Consequently, the object will rise to a height of approximately 5.1 meters.


  Posted by K Sengupta on 2008-12-03 00:24:45
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