Recent content by Trobocop

yes i know but the exercise says it clearly to use only Newton's second law. that's why I'm stuck

I'm trying to solve this with \vec{F}=m*a→\vec{F}=m*d2\vec{r}/dt2 and FB(the weight)=m*g so F=-FB*\hat{k} but then the mass disappears so i am sure I'm doing this wrong, because the exercise tells me the mass of the object. i have to use it somehow if i ignore this, i integrate the above...

a small object with mass m=10gr is thrown vertically upwards from the surface of Earth with a velocity v=10m/s i need to find the max height(Hmax) (when v=0) and the time(tmax) when the object reaches the max height by using Newton's second law only. (ignore the effect of air and air...