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30 Cards in this Set
- Front
- Back
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Speed |
The important aspect of motion. How fast or slow something is. |
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Velocity |
The measures both speed and directions. |
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Acceleration |
The change of speed and direction. |
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Motion |
The change in position. |
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Force |
The push and pull acting on an object. |
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Friction. |
The force that opposes motion between 2 surfaces that are touching. |
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Gravity |
The forces of attraction between two masses. |
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Inertia |
The tendency of an object to resist change. |
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Momentum |
The property of a moving object that makes the object hard to stop. It equals the object's mass x velocity. |
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Elasticity |
When something elastic can return to its original shape after stretched or compressed. |
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True or False: The SI unit for weight is the newton. |
True |
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True or False: When forces act in opposite direction on an object they are subtracted to yield the net force. |
True |
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True or False: Friction words in the same direction as the force applied to more an object. |
False. |
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True or False: When a dolly, there is rolling friction between the wheels and ground. |
False |
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True of False: Static friction prevents you from sliding out of your chair. |
True. |
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True or False: An object has a greater mass on Earth than it does on the moon. |
False. |
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To determine the distance between two points on a map, you can use a ruler and a..... |
scale in the map key. |
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To explain how to get to point A to point B, you must describe both the distance and the..... |
direction |
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When calculating average speed, the symbol 8d represents the.... |
change in distance. |
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If you run a 100-meter race in 20 seconds, what is your average speed during the race? |
5 m/s. You do this by distance/ total time it took |
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Tony ran a constant speed of 10 m/s for a total fo 60 seconds. How far did he run? |
600 m. Multiply the two numbers for the distance. |
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Forces can cause... |
A stationary object to start moving. Moving object to change speed. Moving object to change direction. All of the above. |
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A change in speed, direction or both is called..... |
acceleration. |
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Acceleration is a(n) ______ because it includes both sizes direction. |
vector |
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Speed is one way to measure..... |
motion |
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Running events in track and field are named for their..... |
distance |
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The SI unit for speed is |
m/s |
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Whenever the motion of an object changes,______ has be applied |
forces |
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The forces that created the solar system is..... |
gravity |
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Give an example of NEwton's Third law of Motion |
Newton's thrid law is every action has an and equal and opposite re-action. This means everthig you do has an action. So let's say kicked a ball, while this ball is moving the action would e moving. Or flick something the re-actipon is it moving or flying. |
