→ Physics RMS 2016 → Start Learning / Flashcards Téléchargement MP3

question		réponse
Motion commencer à apprendre		The state in which one object’s distance from another is changing.
Reference Point commencer à apprendre		A place or object used for comparison to determine if an object is in motion.
Distance commencer à apprendre		the measurement from one place to another.
Speed commencer à apprendre		The distance an object travels per unit of time.
Average Speed commencer à apprendre		The overall rate of speed at which an object moves; calculated by dividing the total distance an object travels by the total time.
Velocity commencer à apprendre		Speed in a given direction.
Slope commencer à apprendre		The steepness of a line on a graph, equal to its vertical change divided by its horizontal change.
Acceleration commencer à apprendre		The rate at which velocity changes.
Force commencer à apprendre		A push or pull exerted on an object.
Newton commencer à apprendre		A unit of measure that equals the force required to accelerate 1 kilogram of mass at 1 meter per second per second.
Net Force commencer à apprendre		The overall force on an object when all the individual forces acting on it are added together.
Unbalanced Forces commencer à apprendre		Forces that produce a nonzero net force, which changes an object’s motion.
Balanced Forces commencer à apprendre		Equal forces acting on an object in opposite directions.
Friction commencer à apprendre		The force that one surface exerts on another when the two surfaces rub against each other.
Static Friction commencer à apprendre		Friction that acts on objects that are not moving.
Sliding Friction commencer à apprendre		Friction that occurs when one solid surface slides over another.
Rolling Friction commencer à apprendre		Friction that occurs when an object rolls over a surface.
Fluid Friction commencer à apprendre		Friction that occurs as an object moves through a fluid.
Gravity commencer à apprendre		The force that pulls objects towards each other and to earth.
Mass commencer à apprendre		The amount of matter in an object.
Air Resistance commencer à apprendre		The fluid friction experienced by objects falling through the air.
Inertia commencer à apprendre		The tendency of an object to resist any change in its motion.
Momentum commencer à apprendre		The product of an object’s mass and velocity.
Work commencer à apprendre		Force exerted on an object that causes it to move.
Input Force commencer à apprendre		The force exerted on a machine.
Output Force commencer à apprendre		The force exerted on an object by a machine.
Ideal Mechanical Advantage commencer à apprendre		a machine with an efficiency of 100%
Actual (real) Mechanical Advantage commencer à apprendre		the measurement of mechanical advantage of a machine. It’s always less than 100% because of work wasted due to friction.
Efficiency commencer à apprendre		The percentage of the input work that is converted to output work.
Newton’s First Law of Motion commencer à apprendre		An object at rest will remain at rest, and an object moving at a constant velocity will continue moving at a constant velocity, unless it is acted upon by an unbalanced force.
Newton’s Second Law of Motion commencer à apprendre		Acceleration depends on the object’s mass and on the net force acting on the object.
Energy commencer à apprendre		the ability to cause changes in matter. It changes form and is never used up.
Electromagnetic Waves commencer à apprendre		waves that carry electric or magnetic energy through outer space.
Constant Speed commencer à apprendre		an object’s speed does not increase or decrease, it stays the same.
Variable Motion commencer à apprendre		different distances traveled in equal times.
Kinetic Energy commencer à apprendre		The energy of an object in motion.
Potential Energy commencer à apprendre		The energy that’s stored in a stationary object.
Electrical Circuit commencer à apprendre		A path that electrons from a voltage or current flow.
Incline Plane commencer à apprendre		a simple machine that has a sloped, flat surface.
Pulley commencer à apprendre		a simple machine that consists of a grooved wheel with a rope or cable wrapped around it.
Lever commencer à apprendre		A simple machine that consists of a rigid bar that pivots about a fixed point.
Wheel and Axle commencer à apprendre		A simple machine that consists of two attached circular objects that rotate around a common axis.
Compound Machine commencer à apprendre		A device that combines 2 or more simple machines.

Physics RMS 2016

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