define force?
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Answers
Answer
In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity. In SI base units: kg·m/s2Other units: dyne, pound-force, poundal, kip, kilopondDerivations from other quantities: F = m aSI unit: Newton
Types
Types of Forces
Contact Forces Action-at-a-Distance Forces
Contact Forces Action-at-a-Distance ForcesFrictional Force Gravitational Force
Contact Forces Action-at-a-Distance ForcesFrictional Force Gravitational ForceTension Force Electrical Force
Contact Forces Action-at-a-Distance ForcesFrictional Force Gravitational ForceTension Force Electrical ForceNormal Force Magnetic Force
Contact Forces Action-at-a-Distance ForcesFrictional Force Gravitational ForceTension Force Electrical ForceNormal Force Magnetic ForceAir Resistance Force
Sum
The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude and opposite direction will cancel each other out.
Rules
In physics, a force is any interaction that, when unopposed, will change the motion of an object. ... The original form of Newton's second law states that the net force acting upon an object is equal to the rate at which its momentum changes with time.
Conservation
A conservative force exists when the work done by that force on an object is independent of the object's path. Instead, the work done by a conservative force depends only on the end points of the motion. An example of a conservative force is gravity. Created by David SantoPietro.
Formula
FormulaNewton's second law
FormulaNewton's second lawF = m * a
FormulaNewton's second lawF = m * aF = force
FormulaNewton's second lawF = m * aF = forcem = mass of an object
FormulaNewton's second lawF = m * aF = forcem = mass of an objecta = acceleration
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