Recent content by NewDaddyJones

That was wrong because you have to account for the errors of initial momentum and final momentum. I'm just asking how do you prove conservation of momentum, anyway, not any specific values.

In my lab, I have the change in momentum = -8.00 x 10-3 and my error of change in momentum = 1.22 x 10-3. Does my change in momentum have to be lower than my error of conservation in order to prove conservation of momentum? Then none of my procedures prove this, even though my average error...

Wow, yes - I can't believe I overlooked that, I had the acceleration the whole time, however I was looking at all the equations involving time, overlooking the formula: V2 = Vo2 + 2a (X-Xo) Thank you, answer is Vf = 21 m/s

Okay, I understand your concept, however I don't understand how that can eventually give me the final velocity or friction force for that matter. I applied that concept: FN = mg * cos(theta) mg * cos(theta) = ma ... masses cancel out g * cos (theta) = a But dealing with coefficient...

FK = MuK * FN FK = MuK * mass * acceleration I know you could cancel the masses out and find the acceleration, etc. but that doesn't help me out here, I've tried it about 2-3 times.

Find speed with friction force and no mass?? Homework Statement A ski starts from rest and slides down a 22 degree incline 75m long. If the coefficient of friction is 0.090, what is the ski's speed at the base of the incline? If the snow is level at the foot of the incline and has the same...