Measuring Units
Kinematic Equations
Symbols
Graphing
General Questions
100
What are the SI units for time?
Seconds
100
What is the equation to find average velocity?
v= change in position/ change in time
100
Symbol for velocity
V
100
The slope a displacement (position) vs. Time graph is the ______ of an object.
Velocity
100
A skier starts from rest and accelerates down a slope at 1.2 m/s how much time is required for the skier to reach a velocity of 7.3 m/s?
6.08 seconds
200
What are the SI units for displacement?
Meters
200
This equation finds final velocity using time, initial velocity and acceleration
vf = vi + at
200
Symbol for change in position
delta x
200
The slope of a velocity vs. time graph is the objects _______.
Acceleration
200
A person walks around a 400 meter track, if they end where they started what is their displacement?
Zero
300
What are the SI units for velocity?
m/s
300
This equation finds final position using time and velocity
xf = xi + 1/2 (vi +vf)t
300
Symbol for acceleration
a
300
On a position vs time graph an straight line in the positive direction represents
A positive velocity
300
What is the acceleration of an object in free fall? (Neglecting air resistance)
9.8 m/s/s
400
What are the units for acceleration?
m/s/s or m/s2
400
This equation finds final position using position, time, initial velocity and acceleration
xf = xi + vit+ 1/2 at2
400
Symbol for change in time
Delta t
400
A curve on a displacement vs. time graph shows and objects ____________
Acceleration
400
Draw the velocity vs time graph for an object moving with constant negative acceleration from rest.
Negative slope line starting at o/o
500
What are the SI units for mass?
Grams
500
When an object is in free-fall, what remains constant?
Acceleration due to gravity
500
Symbol for final velocity and final position
vf and xf
500
A flat line on a velocity vs time graph represents
a constant velocity
500
Sketch the velocity vs time graph for an object whose initial velocity is negative, but whose acceleration is positive.
Upward sloped line from negative
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