Mechanics Graphs Flashcards
What is the area and gradient of a displacement - time graph?
area = nothing gradient = velocity
What does it mean if a displacement-time graph is a straight line?
moving at constant velocity (no acceleration)
What does it mean if a displacement time graph is a curve.
The object is accelerating or decelerating at a non - uniform rate (moving at changing velocity)
What does it mean for a d-t graph if a line is steeper?
Greater acceleration
What does it mean for a d-t graph if line is shallower?
Lower acceleration
Can deceleration be shown on a d-t graph?
Yes the curve will curve downwards (going back to equilibrium point)
How would you find the instantaneous velocity?
Draw a tangent at the required point
How to find average velocity in a d-t graph?
final velocity by time
What is the area and gradient of a velocity time graph?
area = displacement gradient = acceleration
What is a v-t graph similar to?
a speed time graph but this one can have a negative part
If acceleration is contstant what does a v-t graph look like?
a straight line
What is there is no acceleration, what does a v-t graph look like?
Horizontal line.
What is the area and gradient of a acceleration time graph?
area = velocity gradient = nothing
if there is a horizontal on a a-t graph, what is the verdict?
constant acceleration
steeper and flatter line on a v-t graph means what
steeper = greater acceleration flatter = smaller acceleration
