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23 Cards in this Set

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The rate at which speed changes is called
ACCELERATION
Another word for rate of change is
RATE
What are the two rates of motion?
SPEED and ACCELERATION
What is the following an example of? "Your speed goes from 20 mi/h to 60 mi/h."
CHANGE in SPEED or VELOCITY ("Delta" V)
The triangle symbol (delta) means
CHANGE IN
The symbol for acceleration is
a
The symbol for change in velocity
"delta" v
The equation for acceleration is
CHANGE IN VELOCITY / TIME
The equation for change in velocity is
FINAL VELOCITY - INITIAL VELOCITY
The units for change in velocity are
m/s
The units for acceleration are
m/s/s or m/s^2
What is the following an example of? "Your speed goes from 20 mi/h to 60 mi/h in 5 seconds."
ACCELERATION
The amount of speed increase or decrease compared to how long the speed takes to change is
ACCELERATION
The slope on a speed vs. time graph is equal to
ACCELERATION
The y-axis on an acceleration graph is
SPEED or VELOCITY
The x-axis on an acceleration graph is
TIME
Another word for negative acceleration is
DECELERATION
Positive acceleration means...
SPEEDING UP
Negative acceleration means...
SLOWING DOWN
No acceleration means...
CONSTANT SPEED
The acceleration of somthing dropped straight down is called
FREEFALL
Other than changing speed, what else can cause acceleration?
CHANGING DIRECTION
The steeper the hill, the faster you accelerate due to the effect of
GRAVITY