Velocity-time and acceleration-time graphs Flashcards
How do you find the average velocity between two points on a parabola
You draw a secant line and find the slope
How do you find the instantaneous velocity between two points on a parabola
You draw a tangent line and find the slope
What happens to the velocity of an object as it slows down
It decreases
What happens to the directions of velocity and acceleration as an object slows down
The directions of velocity and acceleration are in opposite directions
When an object has a constant velocity, what happens to the instantaneous and average velocity
They become equal to each other
Acceleration occurs in an object under two conditions what are they
When there is a change in the magnitude or direction of velocity
What are the two factors on which the direction of the acceleration of an object depend
Whether the object is slowing down or speeding up
Whether the object is moving in a positive or negative direction
Does the velocity-time graph tell you the starting point of an object?
No
What information does The area under the curve of a velocity-time graph give you?
Displacement
If the object in a velocity-time graph is moving in a negative direction, what will be the direction of the displacement
Negative
What information does The area under the curve of an acceleration-time graph give you?
Change in velocity
If a velocity-time graph crosses the x-axis, what does this mean
That the object changed directions
If the line of a velocity-time graph approaches the x-axis, what does this mean
That the object is slowing down
If the line of a velocity-time graph crosses the x-axis, how do you find the area under the curve of the graph?
You calculate the area above the x-axis and the area below and sum them together
What does uniform acceleration mean
That the object has a constant acceleration
