3.1 - Motion - Motion Flashcards
What is speed defined as
Rate of change of distance
What is the speed equation
s = d / t
Define displacement
It is the distance an object has travelled in a given direction (vector as it has both magnitude and direction)
What is acceleration
Rate of change of velocity
What is a vector quantity
It has direction and magnitude
What is a scalar quantity
It only has magnitude and not direction
On a distance time graph what does a flat line represent
A stationary object
On a distance time graph what does a line with constant gradient represent
An object with constant velocity
On a distance time graph what does a curved line represent
An object that is accelerating or decelerating
On a velocity time graph what does a straight line represent
An object moving with a constant velocity
What is displacement on a velocity time graph
The area under the graph
On a velocity time graph what does a line with an increasing constant gradient represent
An object that is accelerating
What does the area under an acceleration time graph represent
Velocity
How can you find the terminal velocity of an object
Use 2 light gates connected to a data logger then using the time and known distance you can calculate the velocity of the falling object
What is g
9.81ms^-2 as the acceleration of free fall on earth
