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29 Cards in this Set
- Front
- Back
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acceleration |
The time rate of change of velocity; it represents the rate at which the speed in a specified direction is changing with respect to time. |
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centi |
A metric prefix that refers to an amount that is 1/100th of the base unit. |
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conservation of momentum |
This law states: the total linear momentum before any impact/collision will be the same as the total linear momentum after any impact/collision. |
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displacement |
A vector quantity indicating the change in location of an object. It is used to indicate the direction and length of a straight line between the starting location and the final location for an object that moved. |
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distance |
For a moving object, it represents the length of the path actually traveled. |
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equilibrium |
A condition (or state) in which the forces acting on an object tend to cancel out each other so as to have no effect. |
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force |
An action such as a push or a pull that tends to cause a change in the motion of an object. |
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freefall |
The unrestricted motion of an object acted upon only by gravity. |
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friction |
Refers to the opposition of motion generated at the surface of an object when sliding (or trying to slide) over the surface of another object. |
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impulse |
The vector product of force and the elapsed time during which that force was applied. |
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inertia |
One of the basic properties of matter that causes all objects to oppose any change in motion. It is described by the quantity called mass. |
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kilo |
A metric prefix meaning 1000 times the base unit. |
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kilogram |
The base unit typically used to measure mass in the SI system. It is equivalent to 1000 grams. |
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mass |
A measure of a quantity of matter. It is a measure of the amount of inertia that an object possesses. |
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micro |
A metric prefix that refers to an amount 1/1,000,000th of the base unit. |
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milli |
A metric prefix that refers to an amount 1/1,000th of the base unit. |
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momentum |
The vector product of the mass and the velocity of an object. |
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newton |
The typical unit of force used in the SI system; the amount of net force required to accelerate a one kilogram object at a rate of one metre per second squared. |
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pound |
The standard unit of force used in the English system of measurement. |
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proportion |
An equality between two or more ratios. |
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ratio |
A method of comparison between two values that is based upon division. |
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resultant |
The vector sum of several components. The name given to a single vector that by itself has the same effect as two or more different vectors acting at the same time. |
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scalar |
One of the physical quantities that can be completely described by listing their magnitude (size and units) only. |
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speed |
A scalar quantity that refers to the ratio of the distance that an object travels to the amount of time it takes for the object to move. |
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terminal |
The term that refers to the maximum velocity that an object reaches as it falls through the atmosphere. |
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vector |
A physical quantity for which you need to include both a magnitude and a direction in order to fully describe it. |
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velocity |
A vector quantity that describes the time rate of change of displacement. |
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volume |
A measure of the amount of space (in three dimensions) that something occupies. |
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weight |
The force of attraction (due to gravity) between an object and some celestial body (usually the earth). |
