9.2 Motion Flashcards
Distance unit
Metres
Displacement unit
Metres
Speed unit
Metres per second
Velocity unit
Metres per second
Acceleration unit
Metres per second squared
Scalar vs vector
A scalar quantity has magnitude only. A vector quantity has both magnitude and direction.
What is displacement?
The displacement of an object is the distance travelled in a specific direction.
What is velocity?
The velocity of an object is the speed of an object in a specific direction
Equation for average speed distance and time
Average speed = distance travelled
————————
. Time taken
Equation that links acceleration, final velocity, initial velocity and time
A= v-u
—-
T
What is distance travelled in a velocity time graph?
The area underneath the graph
How would you find acceleration on a velocity time graph?
Gradient
What is acceleration?
The rate of change in velocity
