Dynamics
Motions, forces, interactions
force
Push, pull, interaction
Contact forces
Physical, touching, direct
At a distant force
Non-contact, remote, indirect
vector
Magnitude, direction, quantity
Gravitational force
Gravity, attracting, mass
Electromagnetic force
Magnetism, electric, interaction
Nuclear force
Strong, weak, atomic
Elastic force
Stretch, compression, spring
Friction force
Resistance, sliding, opposing
Normal force
Perpendicular, support, surface
weight
Gravity, mass, force
Applied force
Exerted, external, applied
Coefficient of friction
Measure, sliding, surface
friction
Resistance, sliding, slowing