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15 Cards in this Set
- Front
- Back
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The Location of a place or an object
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Position
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A Location to which other locations are compared
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Reference Point
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A change of position over time
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Motion
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A measure of how fast something moves
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Speed
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A speed in a specific direction
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Velocity
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A quantity that has both size and direction
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Vector
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The rate at which velocity changes over time
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Acceleration
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Distance/Time =
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Speed
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(Final Velocity -
Intial Velocity) / Time = |
Acceleration
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Bill knows that a friend runs 200m in 10 sec. What is the speed? How do you know?
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20 m/s
200m / 10 sec = 20 m/s |
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Tom walked 10 km in half hour. What is his average speed during the walk? How do you know?
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20 km/hr
10 km / .5 hr = 20 km/hr |
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Jim and Tom run with the same constant speed but in opposite directions. The boys have...
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Different Velocity
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A cheetah can go from 0 m/s to 20 m/s in 2 seconds. What is the acceleration? How do you know?
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10 m/seconds squared
(20 m/s - 0 m/s)/ 2sec = 10 m/s*s |
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A car traveling at 40 m/s slows to 20 m/s. The car has...
How do you know? |
Negative Acceleration
(20 m/s - 40 m/s)/ time = a negative number; thus negative acceleration |
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If two trains are traveling at 60 mph, could they have different Velocity's?
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Yes, they could be going in different directions.
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