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
