Recent content by Javier Mont

Thanks again! Now I have it clear

Thank you very much! For a moment I was in a loop thinking that the friction force was going to exert to every body making contact and thus to everything and cancelating their moves xD Thank you!

So you´re meaning that fs green is not equal to fs yellow in the case of my picture? You mean then that the force I´m using to psuh through the air is less that the friction I´m using to walk so they don't cancel?

So I was wrong! The force to push the air (fs green) is no the same used to push the body (fs yellow), right? The force used to push the air is one that gives the air particles the same speed as the body moving through them. Am I right?

I need heelp with that first larger force that you exert at the begining. If you apply a force on the ground to move, by 3rd law, the ground exerts the same large force as a friction on you, suppousedly moving you. I understand that. The problem is then with the air. Since you´re walking you...

How are we able to move trough the aire if the air exerts a force equal to the friction we use to push us through air? I´ve had this problem in my mind since some days now. I did this picture: url: https://www.kn3.net/60DAC45480AJPG.html

Interesting

Thank you very much! You´re right! That difficult to take a body to rest (linear momentum) is the Force*time, no Force*distance. Thanks!

I understand for linear momentum the measure of the dificulty to take a body to the rest. But when I do the next exercises, I find that it requires less force for one body compared to the other with same linear momentum. Can someone explain me what to understand in an intuitive way what to...