Recent content by ida10

The mean is the sum of all measurements divided by the number of measurements... the mean is therfore a function of the measurments... m(xi) = sum xi/n Where xi i=1,...,n are the measurements and with those gaußian error propagation would give sqrt(sum deltaxi²) as formular for the error where...

Yes i also know gaußian error propergation for functions, but the formular for the mean is also just a function of the measurements... i think if I that if i just have the measured values (without uncertainty of the measurements) that it makes complete sense to just use standard deviation and...

I thought that maybe it would be a good idea to do gaußian error propagation of the formular of the mean, this should give me the uncertainty of the average i calculate from the sample i have... And additionally consider the standard deviation Can someone maybe give me a detailed way to handle...

Yes ok i get that the resistance to going forward that i feel is the force coming from the object on me... And that this force comes from how much the car is pressed against me, due to its inertia wanting to stay in its initial motion... and that i have to offer exactly same and opposite force...

So when i want to change the velocity, the object still wants to go on with its initial motion... now as i want to change its velocity, the mass of the object is still "pushing" the pbject forward... is that what causes the resistance? I would be really happy if someone helped me understand...

Thank you very much for the reply, But i mean is there really no answer to my questions? I mean i must be pushing against something right? How else could you explain the resistance... I would love I could get a little more detail on my question (if there is :) ) Thank you:)

I hope i made clear what i mean and i really hope i can get my answers here Thank you very much for answering already