Physics 21-22 Flashcards
The changing in position of an object relative to a reference point
Motion
A term used to describe an object that is travelling at a constant rate
Uniform Motion
S=
D/T
A quantity that only indicates “How much” (the magnitude) of the quantity
Solar Quantity
Indicates the magnitude and the direction of the quantity
Vector Quantity
A solar quantity, measures the change in distance
Distance Travelled
Measures the change in distance and the direction of the change in position of an object from a reference point
Displacement
A scalar quantity
Speed
Describes both rate of motion and direction of an object
Velocity
A method for determining t = vector directions using the mathematic method of setting up a grid with an x axis and y axis like a graph. The starting point is 0 on the x-axis, and the directions are determined in a counter clockwise direction and are given in positive or negative directions
The X method
UP AND RIGHT
Positive
DOWN AND LEFT
Negative
This method uses the direction of north, south, east and west on a grid to identify vector directions North is the starting point of 0; and directions are stated clockwise from there
The navigator method
N and E
Positive
S and W
Negative
The most common type of motion, the change in velocity during a specific time interval
Acceleration
When the change in both the magnitude of the velocity and the direction are positive
Positive acceleration
When the change in both the magnitude of velocity and the direction are negative
Positive acceleration
When the change in the magnitude of velocity is negative and the direction is positive
Negative acceleration
When the change in the magnitude of velocity is positive and the direction is negative
Negative acceleration
The ability to do work, measured in joules (j) e=w
Energy
A push or pull on an object measured in newtons
Force
Whenever a force moves an object through a distance that is in the direction of force, then work is being done
Work
w=
fd
Average velocity =
Displacement/time elapsed
