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25 Cards in this Set
- Front
- Back
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What is motion
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Motion is an object in motion when it's distance from another object is changing
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What is reference point
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A place or object used for comparison. To determine if something is on motion
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Describe meter
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SI unit for length. International system of units, or system international, is a system of units based on 10 that is used by scientist internationally so they can communicate clearly.
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What is centi
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Meter-one hundredth 1/100
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What is milli
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Meter-one thousandth 1/1000
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Describe Kilo-meter
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One thousand 1,000
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Speed
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Distance an object travels I. One unit of time
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Speed=
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Distance/time
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Constant speed
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Does not change over a period of time
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Average speed
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The total distance covered in the total amount of time it took it to travel
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Describing velocity
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When you know both speed and direction of an objects motion
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Graphing motion
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Time is shown on the horizontal (X-axis), distance is shown on the vertical (Y-axis)
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Calculating slope
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The slope is the rise of a line divided by its run.
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Slope=
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Rise/run
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Different slopes
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If an object does not travel at a constant speed, the slope of the line will vary depending on the speed at that point in time.
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Plates
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Pieces of earth upper layer
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Distance=
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Speed/time
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Acceleration
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At the rate which velocity changes
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Increasing speed
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Going faster
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Decreasing speed
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Slowing down
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Changing direction
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Constant speed, but change in direction of motion.
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Calculating acceleration
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Change in velocity,unit of time. If velocity in measured in meters/second and the time is measured in seconds, the unit of acceleration is meters per second per second
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Acceleration=
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Final velocity-initial velocity
Divided by Time |
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Linear
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When a line rises the same amount each second. Is a constant increase and is shown with a straight line
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Nonlinear
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When the distance traveled VARIES each second. Shown with a CURVED LINE
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