Kinematics Flashcards
What is displacement?
The distance travelled in a given direction (m).
What is instantaneous velocity?
The rate of change of displacement (ms-1).
What is instantaneous acceleration?
The rate of change of velocity (ms-2).
What is instantaneous speed?
The distance travelled per unit time (ms-1).
What is the mean speed?
Total distance/ Total time.
What is the mean acceleration?
Change in velocity/ Total time.
What is the mean velocity?
Total displacement/ Total time.
In displacement-time graphs, what does the gradient represent?
The velocity.
In velocity-time graphs, what does the gradient represent?
The acceleration.
In a velocity-time graph, what does the area under the graph represent?
The displacement.
If an object is thrown upwards, what is its acceleration?
-9.81ms-2.
If an object is dropped, what is its acceleration?
9.81ms-2.
If a projectile question has a vertical component?
Use TUVAX.
If a projectile question has a horizontal component?
Use S=D/T.
What is acceleration due to gravity?
The acceleration on a freely falling object.
