physics: kinematics Flashcards
1
Q
average speed
A
the total distance travelled by an object divided by the total time taken
2
Q
instantaneous speed
A
the speed of an object measured over a very short period of time
3
Q
displacement
A
the distance travelled in a particular direction; it is a vector quantity
4
Q
vector quantity
A
a quantity with both magnitude and direction
5
Q
scalar quantity
A
a quantity with magnitude only
6
Q
velocity
A
an object’s speed in a particular direction or the rate of change of an object’s displacement
7
Q
velocity (graph form)
A
gradient of displacement - time graph
8
Q
vector triangle
A
a triangle drawn to determine the resultant of two vectors
9
Q
resultant vector
A
the single vector formed by adding together two or more vector
