Chapter 3: Motion Flashcards
What is the formula for average speed?
average speed = distance travelled / time taken
What does the gradient represent on a distance time graph?
The speed of the obejct
What is instantaenous speed?
The speed travelled by an object in a very short interval of time
What is the difference between Scalar and Vector Quantities?
Scalar quantities only have a magnitude whereas ,Vectors have magnitude and direction
What is the formula for Average Velocity?
average velocity = change in displacement / time taken
What does Velocity mean?
Velocity is the speed an object is travelling in a certain direction
What does Displacement mean?
The distance travelled in a certain direction
What does the gradient on a displacement time graph show?
Velocity
What does Acceleration mean?
Acceleration is the rate of change of velocity
What does a Straight Line with a constant gradient on a Velocity time graph show
The object is travelling at a increasing velocity and constant acceleration
What does a Straight Line (with 0 gradient) show on a Velocity time graph?
Object is travelling at a constant velocity and has no acceleration
What does a straight line with a negative gradient show?
Object has a constant rate of deceleration
What does a curve show on a velocity time graph
The object’s acceleration or deceleration is changing (depending on the gradient of the curve)
What does the gradient of a velocity time graph show?
Acceleration
How do you find displacement on a Velocity time graph
Find area under the graph
What are the suvat equations?
s = ut + ½at²
v = u + at
v² = u² + 2as
s = ½(u + v) * t
