1-D Kinematics
Help!
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| What is a Coordinate System? | A coordinate system is a grid usually with an X and Y Axis that helps determine movement of an object.
North = Positive Y-Axis
South = Negative Y-Axis
East = Positive X-Axis
West = Negative X-Axis
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| What is a scalar quantity? Give an example. | A scalar quantity only represents magnitude (or size) of a measurement.
Ex.
Time - 60 seconds
Speed - 50mph
Distance - 60m
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| What is a vector quantity? Give an example. | A vector quantity represents magnitude (or size) and direction of a measurement.
Ex.
Velocity = 60mph East
Displacement = -45m to the West
Momentum = -60kgm/s
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| What is magnitude? | Magnitude = size of a measurement.
**Think magnitude of earthquakes!
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| What is velocity? | Velocity describes an object's speed and direction.
Equation: Velocity = Displacement/time
Unit: m/s (Meters/second)
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| What is speed? | Speed describes an object's rate of motion. Distance traveled over a given time period.
Speed = distance/time
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| What is displacement? | Displacement is a vector measurement of distance traveled from the origin, or starting point. This is how far you are away from the origin.
Ex. If you ran all the way around a track (Started and stopped in the same spot) Displacement = 0m
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| What is distance? | Distance is a scalar measurement of distance traveled from the origin. This is how far you have moved total.
Ex. If you ran all the way around a track (Started and stopped in the same spot)
Distance = 400m
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| Time | A unit of measurement for a period of time is seconds.
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| Terminal velocity | The maximum speed an object can reach because of the air resistance acting on the object.
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| What is acceleration? | Acceleration measures the change in velocity over a given time period.
Acceleration IS a change in velocity.
*Change in speed OR change in direction.
Equation- a=∆V/t
a - acceleration
∆V - change in velocity
t - time
units = m/s/s
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
becook87
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