Recent content by rad5229

if we were to assume the impulse approximation, wouldn't we just throw out the frictional force anyways since the impulse force would be much greater? i think that is how to use impulse approximation

i just re-read your reply. you said momentum was not conserved? could you explain more, i thought momentum was always conserved, kinetic energy was not?

okay i think i figured it out, or at least the answer seems a little more reasonable given that it involves block 3 now. here it is reworked with the answer at the bottom, would i still be able to use m1v1 + m2v2 = mfvf (final)? I'm sorry, we have not covered this in class yet, i read the book...

Homework Statement We are trying to predict the speed of all three blocks at the first instant they all have the same speed using only variables. Homework Equations fg = mg fk = -μk(mg) = normal force a = F/m t = √(2Δx/a) derived from Δx = volt + 1/2at^2 v = vo + at p = mv =...