Newton's second law of motion
E27433
Newton's second law of motion is a fundamental principle stating that the net force acting on an object equals the rate of change of its momentum, commonly expressed as F = ma for constant mass.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
classical mechanics law
ⓘ
physical law ⓘ |
| appliesTo |
point particles
ⓘ
rigid bodies ⓘ systems of particles ⓘ |
| appliesUnderCondition | constant mass ⓘ |
| assumes | inertial reference frame ⓘ |
| category | laws of motion ⓘ |
| contrastsWith | impulse-momentum formulation as integral form ⓘ |
| defines | relationship between force and acceleration ⓘ |
| describedIn | Philosophiæ Naturalis Principia Mathematica ⓘ |
| domain | macroscopic scales ⓘ |
| expressedIn | SI units ⓘ |
| formulatedBy | Isaac Newton ⓘ |
| generalizedBy |
F = d(γmv)/dt in special relativity
ⓘ
relativistic mechanics ⓘ |
| hasAlternativeStatement | change of motion is proportional to the impressed motive force and takes place along the straight line in which that force is impressed ⓘ |
| hasConsequence |
heavier objects require more force for same acceleration
ⓘ
motion changes only under nonzero net force ⓘ |
| hasDimensionForForce | M L T^-2 ⓘ |
| hasMathematicalForm |
F = dp/dt
ⓘ
F = ma ⓘ |
| hasOrder | second ⓘ |
| hasScalarForm | ΣF = ma along a given axis ⓘ |
| hasUnitForForce | newton ⓘ |
| hasVectorForm | ΣF⃗ = m a⃗ ⓘ |
| implies |
acceleration is inversely proportional to mass
ⓘ
acceleration is proportional to net force ⓘ zero net force gives zero acceleration ⓘ |
| introducedInCentury | 17th century ⓘ |
| isBasisFor |
Newtonian mechanics
ⓘ
surface form:
Newtonian dynamics
equations of motion ⓘ |
| partOf | Newton's laws of motion ⓘ |
| relatedTo |
Newton's first law of motion
ⓘ
Newton's third law of motion ⓘ |
| relatesQuantity |
acceleration
ⓘ
mass ⓘ momentum ⓘ net force ⓘ |
| statesThat | net force on a body equals the time rate of change of its momentum ⓘ |
| usedIn |
Newtonian mechanics
ⓘ
surface form:
classical mechanics
dynamics ⓘ engineering ⓘ orbital mechanics ⓘ structural analysis ⓘ vehicle motion analysis ⓘ |
| validWhen | speeds much less than speed of light ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.