Recent content by agentmm

Thanks a lot for the responses... Since I can't really use this "small" delta t, would it be acceptable to do a "mass * delta v" for each body (assuming we know the velocities of the bodies pre and post collision...) Even though their masses have combined post impact, I guess you can still use...

Hello, I was just wondering if an Impulse was exerted by one body on another if they collided but remained in total contact post-collision. The reason I ask is because my little I=F(delta)t indicates that there should be a change in time to calculate an impulse but in this case the 2 bodies...

Thanks for all the replies. I now realize the significance of "work" and "frame of reference" in this discussion.

Hello, I am new here so I hope this is posted correctly. If you assume a perfectly round Earth (with uniform density etc.), is the potential energy of an object = 0 there? I assumed the object was just a small sphere of concentrated mass with no dimensions or whatever makes it simple...