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29 Cards in this Set
- Front
- Back
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Newton's First Law |
A body continues in a state of rest or linear motion unless acted upon by a net force. |
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Newton's Second Law |
The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. |
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Newton's Third Law |
For every action, there is an equal and opposite reaction. |
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Mass |
How much matter/ substance in an object. - measured in kg - scalar - constant and anywhere in the universe |
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Weight |
Force - Measured in Newtons - Vector - Direction is always vertically down |
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Terminal Velocity |
The final, constant velocity of motion |
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Fundamental measures |
Length, Mass, Time, Kilogram, Second |
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Derived measures |
Density, Volume, Speed, Force |
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Scalar Quantity |
Has size (magnitude only) Example: displacement, velocity, weight, force and acceleration |
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Vector Quantity |
Has BOTH a size and a direction Example: Mass, Time, Distance, Temperature, Speed, Charge, Density, Energy, Area and Volume |
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Distance |
The total length of ground covered. (Scalar) |
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Displacement |
Straight-line length measured from start to finish. (Vector) |
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Speed |
How fast an object is moving |
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Average speed |
The distance travelled per unit of time. |
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Instantaneous speed |
The speed at any given instant in time |
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Average speed |
The average of all instantaneous speeds |
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Average Velocity |
Displacement per unit time. |
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Velocity |
The speed of something in a given direction. |
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Constant Velocity |
When an object movies in a straight line at a constant speed |
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Uniform Acceleration |
Motion with constant or uniform acceleration occurs when the velocity increases or decreases by the same amount each second. |
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Acceleration |
The measure of the rate at which an object's velocity changes. |
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Contact Force |
A type of force that result when two interacting objects are perceived to be in physical contact of one another. |
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Non-contact force |
A type of force that result even when two interacting objects are not in physical contact with each other but are able to exert a push or pull. |
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Friction Force (Contact) |
Force exerted by a surface as an object moves across it or makes an effort to move across it. |
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Normal Force (Contact) |
Support force exerted upon an object that is in contact with another stable object. |
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Air Resistance Force (Contact) |
Special type of frictional force that acts upon objects as they travel through the air. |
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Net force |
Sum of all forces that act upon the object |
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Gravitational Force |
Force with which the earth, moon or other large object attracts another object towards itself. |
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Electircal Force |
The attractive interaction between any two charged object |
