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32 Cards in this Set
- Front
- Back
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When the distance from one object to another is changing it is in _______.
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motion
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A place or object used for comparison to determine if something is in motion is called?
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a reference point
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An object is in motion if it changes ______ in relations to a ______ _____.
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position
reference point |
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What is the international system of units called?
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SI unit of matter
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What unit is the SI unit based on?
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METERS
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The SI unit is used by scientists ______.
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internationally
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The distance the object travels is ?
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one unit of time
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What is the formula for Speed?
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Speed= distance/time
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_____ speed does not change for a period of time.
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CONSTANT
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What is the total distance covered in the total time it took to travel?
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AVERAGE SPEED
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What's the formula for average speed?
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Average speed= TOTAL distance/ TOTAL TIME
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When you know both the SPEED and DIRECTION OF AN OBJECT'S MOTION, you know the ______ of the object?
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VELOSITY
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What is the definition of VELOSITY?
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SPEED IN A GIVEN DIRECTION
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As you graph motion, TIME is shown on the _____ , and DISTANCE is shown on the verticle or _____ .
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X-axis
Y-axis |
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The steepness or slant of a line is called its ______.
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slope
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What does the slope of the line tell you?
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HOW FAST ONE VARIABLE CHANGES IN RELATION TO THE OTHER VARIBLE
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The faster the motion the _____ the line slope is.
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STEEPER
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how do you calculate the slope?
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slope=rise (y-axis)/run (x-axis)
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What are plates?
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pieces of Earth's upper layer (the rocky shell, or crust)
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How do you calculate distance?
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DISTANCE=SPEED/TIME
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The rate AT which velocity CHANGES is called what?
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ACCELERATION
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In science, acceleration refers to:
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increasing speed
decreasing speed changing speed |
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going faster is also called?
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increasing speed
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Slowing down is called:
1. 2. 3. |
1.decreasing speed
2.deceleration 3. negative acceleration |
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What do you have to know before you can calculate acceleration?
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The change in velocity during a unit of time
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What's the formula for acceleration?
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ACCELERATION= final velocity - (minus) initial velocity / (divided by)time
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What is the unit of acceleration?
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Meters per second,per second or S (squared)
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How do you graph acceleration?
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distance is shown on the x-axis and speed is shown on the y-axis
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When a line rises the same amount each second, this is called____ _____.
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CONSTANT INCREASE
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How is constant increase shown on the graph?
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straight line
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What is a NONLINEAR line?
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It is when the distance varies each second and is shown with a CURVED LINEL
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BE ABLE TO WORK WITH GRAPHS THAT HE HAS GIVEN YOU ON BACK OF
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YOUR OUTLINE
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