Recent content by ElTaco

Homework Statement There are two forces P and Q that are applied to a crate, with their respective magnitudes 100 and 200 N. One is applied at an angle upward with angle theta, and one is applied at an angle downward with angle phi. Both have positive horizontal components and the sum of the...

What if a force on an object doesn't cause the object to move but in fact causes the "agent" of the force to change its velocity? I've been reading this thread, and it seems to me that's the only explanation that works in K^2's favor. Since we technically describe changes in velocity based on...

Oh ok, I see, thank you very much!

Sorry for bumping up an old thread, but thought it'd be better than making a new one about the same problem. Can someone tell me where equation for I is derived from? From my knowledge I know that I = cMR^2 (as an estimated value), but what exactly do you plug into get to that point? (I =...

I said they had the same speed, not velocity. In that example, the magnitudes of their velocity were the same, the signs (AKA directions) were different.

I'm confused, isn't this the same nature as the question?

Oh ok, after looking at Naty's post, I think that answers your question the best. As another way to think about it (and I guess a direct answer to your question since it's from an mass x acceleration standpoint versus a momentum one), F = ma, where a = dv/dt, the change of velocity over...

Since you're comparing to a wall, I think you need to take two cases into consideration rather than one. 1) You are moving at 50 mph and the wall is stationary. 2) You are moving at 50 mph and the wall is also moving at 50 mph. In which case would there be a stronger impact? The...