review of chapter 2 vocab
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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| speed | measure of how fast something is moving
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| instantaneous speed | how fast something is moving at any given moment
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| average speed | the distance covered divided by the time it took to cover it.
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| velocity | speed in a given direction
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| What is the average speed of a snail that travels 2 meters in 4 hours? | 0.5 m/h
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| What is the velocity of a mountain goat that travels 200 m north in 10minutes? | 20 m/minute north
(remember velocities need a direction)
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| acceleration | the rate at which velocity changes
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| A gerbil that starts at rest and accelerates to a velocity of 1 m/s right. It takes it 10 seconds to reach this velocity. What is its acceleration? | 0.1 m/s2
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| A rhino is traveling at a speed of 5 m/s. It travels for 10 seconds. How far does the rhino go? | 50m
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| A wildebeest is traveling at a velocity of 2 m/s south. It travels 200 meters. How long does it take the wildebeest to cover the distance? | 100 s South
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| A pumpkin starts at rest and is rolled down a ramp with an acceleration of 3 m/s2 down. If it accelerates for 2 seconds, how fast is it going? | 6 m/s down the ramp
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| free fall | motion under the influence of gravity only
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| air resistance | force that slows the acceleration of falling objects
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| An unconscious turtle is dropped from the top of the high diving board. It takes 1.2 seconds to hit the water below. How fast was it moving when it hit | 11.77 m/s
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| An unconscious turtle is dropped from the top of the high diving board. It takes 1.2 seconds to hit the water below. How far did it fall? | 7.06 m
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| Does air resistance increase or decrease the acceleration of a falling object? | decrease
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| How far will an object move in 1 second if its average speed is 4 m/s? | 4 m
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| Sue Subaru travels in her car in a straight line at a constant speed of 30 miles per hour. What is Sue's acceleration? | a = 0 since she is not turning nor changing speed
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| A dragster traveling at 10 m/s north increases its velocity to 25 m/s north in 3 seconds. What is its acceleration during this time period? | 5 m/s2 north
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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:
abolvin
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