Shared Flashcard Set

Details

Forces and Motion
N/A
25
Science
8th Grade
01/13/2014

Additional Science Flashcards

 


 

Cards

Term
Newton's First Law of Motion
Definition
Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.
Term
Inertia
Definition
Forces that resist a change in motion
Term
Friction
Definition
A resistance force encountered when one body is moved in contact with another.
Term
Newton's Third Law of Motion
Definition
For every action there is an equal and opposite reaction.
Term
Newton's Second Law of Motion
Definition
The relationship between an object's mass m, its acceleration a, and the applied force F is F = ma.
Term
Mechanical Energy
Definition
Energy due to position and motion; sum of potential and kinetic energies. Includes heat and friction. (Just add Potential Energy + Kinetic Energy.)
Term
Speed
Definition
Distance traveled over a given amount of time
80 km / 2 hrs = 40 km / hr
80 miles / 2 hrs = 40 mph
Term
Acceleration
Definition
The final velocity – the starting velocity, divided by time.
Term
Momentum
Definition
A measure of the motion of a body equal to the product of its mass and velocity. (Mass times velocity)
Term
Work
Definition
What is accomplished as a result of exerting force on an object and moving it. Unit of measurement = joules (J)
Term
Simple Machine
Definition
A simple device used to change the magnitude or direction of a force.
Term
Velocity
Definition
Displacement traveled over a given amount of time. Takes into consideration the direction of the moving object, not just the speed.
Term
Centripetal Force
Definition
A force that results in the movement of a body along a curved path.
Term
Equilibrium
Definition
A system that is in a balanced state
Term
Action-Reaction Pair
Definition
A set of two opposing forces.
Term
Gravitational Force
Definition
A force between objects that is relative to both mass and distance.
Term
Force
Definition
A measurement of the push or pull that is exerted on an object. Unit of measurement = Newton (N)
Term
Vector
Definition
A quantity of both magnitude and direction that is represented by an arrow.
Term
Net Force
Definition
A quantity of two or more forces combined
Term
Air Resistance
Definition
A resistant force of air moving around an object.
Term
Density
Definition
A measurement of the amount of mass per unit volume. How compact or concentrated an object/fluid is.
Term
Buoyant Force
Definition
An upward force exerted by a fluid that is equal to the weight of the fluid displaced by the body.
Term
Balanced Forces
Definition
Forces that are equal in size, but opposite in direction.
Term
Unbalanced Forces
Definition
Forces that are opposite in direction, but not equal in size
Term
Displacement
Definition
The distance an object is moved from it's original position
Supporting users have an ad free experience!