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# toybox

### Newton's toy box

Termthe rate of change in velocity
action force a force exerted on a subject
air resistance the force of air pushing against a moving object
conservation of energy the amount of energy in a closed system remains constant over time
conservation of momentum for two objects subject only to their mutual interactions, the total momentum of the objects remains constant in time. P=mv. This is equivalent to Newton's third law of motion
elastic potential energy the term used to describe the energy stored in a compressed or stretched object (usually a spring or rubber band)
energy the ability to do work (or to produce change)
force a push or pull
freefall the condition of an object falling in a gravitational field
friction a resistance force opposing motion
gravitational potential energy the energy possessed by an object that can fall
gravity the force of attraction between masses
inertia the property by which an object tends to remain at rest or in uniform straight-line motion.
kinetic energy the energy possessed by an object because of its motion
mass the amount of matter an object contains
microgravity almost weightless conditions; only very small forces remain. This is the term used by NASA to describe the in-orbit environment
momentum the product of an object's mass multiplied by its velocity. Momentum is conserved quantity within a closed system.
Newton's first law of motion an object will remain at rest or in uniform motion unless acted on by an unbalanced external force
Newton's second law of motion the acceleration of an object is inversely proportional to its mass and directly proportional to the resultant external force acting on it (F=ma). A greater unbalanced force causes a greater acceleration of an object in the direction of the force. The m
Newton's third law of motion Forces always occur in pairs. If object A exerts a force on Object B, an equal but opposite foce is exerted by Object B on Object A. For every action there is an equal and opposite reaction.
parabola One possible path of an object falling freely in a gravity field. A tossed ball follows a parabolic arc
potential energy the energy required to place an object in a position. This energy is stored in the object until the object moves
reaction force the force exerted by an object experiencing an action force. The reaction force is equal to the action force, but in the opposite direction
speed the distance traveled by an object divided by the time required to cover the distance
velocity a measure of the speed and direction of an object's motion
weight the strength of the gravity force pulling down on an object.
acceleration the rate of change in velocity
gravity support force the force that opposes gravity
Created by: ctalley