Science 8 Force And Motion Definitions Flashcards
An event or process that leads to a result or change
Cause
The moment when two objects hit each other
Collision
A result or change caused by an event or process
Effect
The same in size degree and value
Equal
To apply force
Exert
A push or pull that can change the motion of an object
Forcd
A force between an object and the surface it is moving over
Friction
To reach a conclusion using evidence and reasoning
Infer
The energy that an object has because it is moving
Kinetic energy
The amount of matter that makes up an object
Mass
Anything that has mass and takes up space.
Matter
Acting or going in reverse direction
Opposite
A self contained unit on an aircraft or spacecraft etc.
Pod
How fast an object is moving.
Speed
Speed in a particular direction.
Velocity
A tendency to do nothing or to remain unchanged.
Inertia
Describes using plus minus north west east south etc.
Reference direction
When the net force is not zero, and produced a change in motion.
Unbalanced Force
Measure of total distance over time
Average Speed
When the force applied to an object produces a net force of zero.
Balanced Force
Speed does not change
Constant speed
SI unit for mass
Kilogram
Speeding up slowing down or changing direction
Acceleration
Unit for speed
Kilometers per hour, meters per hour, centimeters per second
Unit for distance
Kilometer meters miles
Fluid friction experienced by object falling through air
Air resistance
The sum of all forces acting on an object
Net force
Force that acts on an object stretching apart of matter
Tension force
The force that pulls an object toward the earth
Gravity
The formula of force
F = M *A
the quantity of motion of a moving body, measured as a product of its mass and velocity.
Momentum
A body at rest, will remain at rest unless an unbalanced force acts on it.
Newtons 1st Law
The force on an object is equal to the mass of that object times its acceleration, F = M * A
Newtons 2nd Law
For every action, there is an equal and opposite reaction.
Newtons 3rd Law
How far an object is from where it traveled
Displacement
To establish a point from which to measure future distance, or if movement has occurred
Reference Point
The limit of the average velocity as the elapsed time approaches zero
Instantaneous
What does Δ mean?
Final velocity - Initial Velocity
Equation to find time
Δv/a
Equation for final velocity
Initial Velocity + Acceleration * Time
Equation for initial velocity
Final Velocity - Acceleration * Time
Increasing Velocity/ Speeding Up
Positive Acceleration
Decreasing Velocity/ Slowing Down
Negative Acceleration
Constant Velocity/ Not Accelerating
No Change In Velocity
A Certain Starting Position Of Velocity
Initial Velocity
