Why do fundamental physical laws involve the second derivative?
75612
Why are differential equations for fields in physics of order two?
26736
Reason for vanishing of the covariant derivative of energy-momentum tensor of matter in general relativity
59279
Example of function that is differentiable, but the second derivative is not defined
51097
Newton's third law and General relativity
4421
Proof that total derivative is the only function that can be added to Lagrangian without changing the EOM
61345
Newton's second law explanation
48756
Why are derivatives in interaction terms treated differently from derivatives in the kinetic term?
114672
Why do we use the Lagrangian and Hamiltonian instead of other related functions?
152446
Noether's Theorem and scale invariance
885
Why is the 2nd derivative written as $\frac{\mathrm d^2y}{\mathrm dx^2}$?
65478
Operational definitions in Newtonian Physics
64674
Intuitive explanation of the inverse square power $\frac{1}{r^2}$ in Newton's law of gravity
37934
What is the physical meaning of the connection and the curvature tensor?
65659
Partial derivative paradox
107290
proof of product rule of derivatives using first principle?
21125
Why does Bernoulli's principle work?
46482
Why does the fundamental theorem of calculus work?