Why does gravity becomes negative when finding the negative derivative of potential? (I know $F=-dU/dx$) Why is $F$ itself negative?
131958
Why is the potential energy equal to the negative integral of a force?
85291
Why can velocity and acceleration be negative?
3387
Derivative of $f(x)=|x|$
95836
Why is the electric field is the negative gradient of potential energy function?
66639
Second Derivative
123571
A change in the gravitational law
29256
Question on the hydrostatic paradox
41209
Does matter with negative mass exist?
137061
Understanding the different kinds of mass in gravity
106119
Why is there no permittivity-type constant for gravitation?
142353
Why in Newton's law of gravity, we do $M_1 \times M_2$ and not $M_1 + M_2$?
69854
Why is there a minus sign in this wave equation derivation?
59955
How to find distance travelled when the change in the force of gravity is not negligible?
141018
Why does resting potential not become continually more negative?
15425
Equivalence principle question
153794
What is the meaning of $1/(D+a)$, where $D$ is the derivative operator?
14373
In physics sometimes we find energy that is negative. What does the negative sign indicate?