Forces & Dynamics

static friction

a resistive force between stationary objects due to the roughness of the two surfaces in contact

newton's first law

An object in motion stays in motion, unless acted on by a force. An object at rest stays at rest unless acted on by a force.

newton's second law

Force is the product of mass and acceleration.

newton's third law

For every action force, there is an equal but opposite reaction force.

conservation of momentum

a law that states that the total momentum is conserved in a closed system

sliding friction

friction that acts on objects when they are sliding over a surface

mass

the amount of matter in an object

centripetal force

any force that causes centripetal acceleration

gravitational force

an attractive force that occurs between all objects that have mass

weight

the force of gravity on an object

friction

a force that opposes the motion of a body across a surface or through a gas or liquid

inertia

an object's resistance to a change in motion

fluid friction

the force that resists motion either within the fluid itself or of another medium moving through the fluid

strong nuclear force

the force that holds the nucleus of atoms together

force

a pull or push that is applied to an object

net force

the resulting force determined by combining all of the forces acting on an object

terminal velocity

steady speed achieved by an object freely falling through a gas or liquid

projectile motion

the motion of an object thrown (projected) into the air

rolling friction

the frictional force that occurs when one object rolls on another

gravity

a force that exists between any two objects that have mass and that pulls the objects together. The greater the mass of an object, the greater its gravitational pull.

weak nuclear force

the force responsible for radioactive decay

momentum

a quantity of how much inertia a dynamic object has

electromagnetic force

The fundamental force associated with electric and magnetic fields

air resistance

a force that is caused by air

newton

the three fundamental laws Isaac Newton discovered governing the motion of objects