Lesson 3: 1D Motion Flashcards
What is displacement?
Change in position, vector
How do we find displacement?
Xf - X0
What is distance?
length of entire motion traveled, scalar
What units do we use for displacement?
meters
What is instantaneous velocity?
Velocity at a specific point in time.
How can we find instantaneous velocity on a position vs time graph?
Determine the slope of the line at that point in time
What are the units we use for velocity?
m/s
What is average acceleration?
Change in Velocity/Time
What does deceleration mean?
Slowing down
If an object moves in the positive x direction and speeds up, what will be the direction of acceleration?
positive
If an object moves in the negative x direction but slows down, what will be the direction of acceleration?
positive
What is instantaneous deceleration?
Acceleration at a specific point in time
How can we find instantaneous acceleration on a velocity vs time graph?
Determine the slope of the line at that point in time
What is the first kinematic equation?
vf = v0 + at
What is the second kinematic equation
Δx = v0t + 1/2 at^2
What is the third kinematic equation?
vf^2 = v0^2 + 2a Δx
What condition must be met in order to use the kinematic equations?
acceleration must be constant
Given: acceleration, time, initial velocity. How do you find displacement?
second equation
Given: final velocity, acceleration, initial velocity. How do you find time?
first equation
Given: initial velocity, acceleration, final velocity. How do you find displacement?
third equation
Given: final velocity, initial velocity, time. How to find displacement?
1) first equation
2) second equation
Given: time, initial velocity, displacement. How do you find final velocity?
1) second equation
2) first equation
Given: final velocity, displacement, initial velocity. How do you find time?
1) third equation
2) first equation
If an object is in freefall, what is the acceleration of that object?
-9.8 m/s^2
You drop an object from some height. What is the initial velocity of that object?
0 m/s
You throw and object straight up into the air and it comes straight back down. Where is it moving the fastest?
Just after it leaves your hand and just before it returns to your hand
You throw an object straight up into the air and it comes straight back down. Where is it moving the slowest?
at the top (apex) of the motion
You drop an object from some height. What is the direction of displacement?
negative
The image shows a position vs time graph for motion in one dimension. What will the velocity vs time graph look like?
The image shows a velocity vs time graph for motion in one dimension. What will the acceleration vs time graph look like?
The image shows a position vs time graph for motion in one dimension. What will the velocity vs time graph look like?
The image shows a velocity vs time graph for motion in one dimension. What will the acceleration vs time graph look like?
The image shows a position vs time graph for motion in one dimension. What will the velocity vs time graph look like?
The image shows a velocity vs time graph for motion in one dimension. What will the acceleration vs time graph look like?
What is average velocity?
Displacement/Time, vector
