-4
votes
0answers
15 views

Inertial Frame Missing [closed]

HELP ! I've lost my inertial frame, but my energy equations all still seem to work. Do we really need an inertial frame concept? Surely we just take the potential function (which will be well ...
2
votes
1answer
86 views

Gravity vs inertia

As stated according to Newton laws of gravity, every object with mass attracts all other object with a force which produces acceleration. Basically there are several forces in the universe which ...
1
vote
2answers
203 views
2
votes
3answers
340 views

The two faces of $F = m*a$

As I have understood, $F(t)=m \cdot a(t)$ can have 2 different meanings: When applying an external force $F$ on a point mass of mass $m$, the resulting acceleration of that mass at time $t$ is ...