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Physics
The study of mater and how matter is related to energy.
Chemistry
The study of matter, it's behaviour, it's characteristics, and changes it undergoes
Accuracy
Occurs when the first trial and subsequent trials hit the intended target
Presicion
Occurs when the second trial and subsequent trials closely follow the first trial,
Model
A pattern, plan, representation, of description designed to show the structure or workings of an object, system or concept.
Dimension
Physical quantity that can be measured
Frame of Reference
A system for specifying the precise location of objects in space and time
Displacement
The change in position of an object
Speed
The rate of change of distance
Speed= distance/time
Velocity
The rate of change of displacement
Velocity= displacement/time
Acceleration
The rate of change of velocity (m/s²)
Freefall
Is the motion of an object when only the force of gravity acts on the object
Scalar
Quantity posseses magnitude (size) only
Vector
Quantity posseses both size and direction
Resultant
A vector that represents the sun of two or more vectors
Components of a Vector
The projections of a vector along the axes of a coordinate system
Projectile Motion
The curved path that an object follows when thrown, launched, or otherwise projected near the surface of Earth
Force
That which changes and objects state of rest, or uniform motion in a straight line
Force
Push or pull
Inertia
The tendency of an objection to remain at rest or of moving to continue moving
Newtons 1st law (the law of inertia)
Every object contains a state of rest, or uniform motion in a straight line
Net force
The net force is calculated just as you would the resultant
Newtons 2nd law
States that the acceleration is directly proportional to the applied force, and inversely proportional to the mass
Newtons Second Law
States that the rate of change of momentum is directly proportional to the applied force
Momentum
The momentum of an objects mass and velocity
Newtons 3rd law
Action and reaction are equal or opposite
Friction
Force opposing motion
Normal force
Force that acts on a surface in a direction perpendicular to the surface
Pressure
The force acting normally (perpendicular) per unit area
Scientific Work
Said to be done when the point of application of a force moves and is measured by the product of the force and the distance moves in the direction of the force
Energy
The capacity to perform work
Power
The rate of doing work, p=w/t unit = w
Law of conservation of energy
Energy can neither be created nor destroyed but only transformed from one form to another
Kinetic energy
The energy the object possesses by reason of its motion
Potential energy
The energy the object possesses by reason of its position (gravitational) of state (elastic)