The discussion centers around the physics of a high jump, specifically analyzing the vertical motion of Dave Johnson's center of mass as he leaves the ground with a vertical velocity component of 6 m/s. Participants are exploring the relevant equations and concepts related to motion under the influence of gravity.
The discussion is ongoing, with participants questioning assumptions and exploring various approaches. Some guidance has been offered regarding the importance of identifying forces acting on the jumper and the role of gravity. There is no explicit consensus yet, as participants are still working through their understanding of the problem.
Participants have noted the absence of a structured problem statement and relevant equations, which is encouraged by the forum's guidelines. There is also a mention of recent topics studied, such as Work, Energy & Power, which may relate to the problem.
BvU said:Hello Ginger, welcome to PF :)
Nice exercise. Somewhere along the line the template fell away. It's use is mandatory for good reasons. (Read the guidelines).
In this case you posted only the problem statement. What equations, tools, stuff have you available to tackle it ? Place them under 2). And what have you tried and what came out ? Put that under 3). Help is on the way...
1. Homework Statement
2. Homework Equations
3. The Attempt at a Solution
A guy jumps off the ground. What forces are working on him so he doesn't go into orbit around the earth?Gingerclaire_ said:Do you do a kinetic energy equation? Sorry I think I'm making it more difficult for myself here
Work is not a force. Once the jumper leaves the ground, there is only one thing affecting his body. What is it? If you pick up a book and drop it on the floor, why does the book fall?Gingerclaire_ said:So there is a force acting upward - work. Am I right?