Collisions Definition and 709 Threads

Hey all-- I had a test yestrerday dealing with momentum, energy convservation, collision, etc, and there was one question that was marked incorrect, however I feel that I may have done it correctly. Please check over my work against my teacher's solution to see what you guys think... anyway...

I'm stuck, for the past 30 minutes. Anyone care to give a struggling student a hand? Any help would be appreciated due to that fact that I don't understand the material. I have notes, yet I have one of those teachers who talk, but don't teach. I don't know. Thanks to anyone who can help me out...

If you do some simple manipulations of the equations E=hf, E=1/2mv^2, P=mv, and p=h/<lambda>, one can derive that the momentum is h/<lambda> or that it is h/(2<lambda>). I know that photons do not always follow normal mechanics, but do they follow the usual rules for mechanics for collisions...

I just needed help on these problems because I got stuck on them. Anyone know how to start off these problems? An amoeba of mass 1.0 x 10^-12 kg propels itself through the water by blowing a jet of water through a tiny orifice. Suppose the amoeba ejects water with a speed of 1.0 x 10^-4 m/s...

If i have the equation m1v1 + m2v2 = m1v1' + m2v2' would i have to use any calulus to find either velocity of the second object? What is that the equation for? Is it inelastic collisions?

What is the equation for completely inelastic collisions?

I'm trying to do these problems by only reading about them in the book and, having not discussed them in class at all, I'm a little weary about some questions. So bear with me if some of the questions seem a little bit stupid .. I'm just starting out with this stuff. There are more questions...

1. An experiment is performd in a physics laboratory to find the mass of a stationary particle, B. A proton, A, of mass 1.7 x 10^-27 kg, traveling at 4.0 x 10^6 m/s, strike B and bounces straight back at a speed of 2.0 x 10^6 m/s. If B moves ahead at 1.0 x 10^6 m/s. calculate B's mass 2. Two...

In the rather basic physics class I'm in we just coverd conservation of momentum. We went over the application of this with elastic collisions. I understand that Total momentum before the collision = Total momentum afterwards. What I don't uderstand is how can you tell what the individual...