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