9K speeding up AJHS nz
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| mean speed | The total distance something travels divided by the total time taken allows you to calculate the thing’s mean or average speed.
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| speed | How fast something is moving. Often measured in metres per second (m/s), miles per hour (mph) or kilometres per hour (km/h).
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| accelerate | Change speed.
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| air resistance | A force that tries to slow down things that are moving through the air. It is a type of friction.
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| balanced forces | When two forces are the same strength, but working in opposite directions.
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| friction | A force that tries to slow things down when two things rub against each other.
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| unbalanced forces | When two forces working in opposite directions are not the same strength.
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| drag | Another name for air resistance or water resistance.
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| streamlined | Giving something a smooth shape to reduce the air resistance or water resistance.
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| water resistance | A force that tries to slow down things that are moving through water. It is a type of friction.
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| distance–time graph | A graph that shows how far something has moved in a certain time.
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| terminal velocity | The maximum speed of an object. Usually only applies to falling objects when the downward force is balanced by drag.
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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:
johncl
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