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20 Cards in this Set
- Front
- Back
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Newton's First Law |
An object at rest, stays at rest, unless acted upon by an unbalanced force. |
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Net Force |
The overall force acting upon an object in a certain direction. It is measured in newtons (N). |
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Balanced Force |
In the case of two forces, the force acting in one direction, is equal to a force acting in the opposite direction, usually rendering the object motionless. |
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Unbalanced Force |
Is a force that when acted upon an object, causes it to accelerate (move/change speed). |
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Inertia |
A tendency to remain at rest, or to keep going in one direction. |
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Newton's Second Law |
The force acting upon object [in Newtons or (N)]is equal to the product (multiplication) of the mass of the object (in kilograms) and the acceleration of the object (in m/s/s ). |
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Equation for Newton's Second Law |
F = M x A or F = MA |
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Newton (measurement) |
The SI unit of measurement that measures force. |
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Newton's Third Law |
For every action, there is an equal and opposite reaction. |
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Action |
Something that is done, to cause a reaction, typically a push or a pull. |
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Reaction |
The effect of an action, typically resulting in acceleration or movement. |
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Momentum |
Mass in motion; the product of mass (in kg) and velocity (in m/s do not confuse this with m/s/s). |
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Equation for Momentum |
P = M x V Momentum = mass x velocity |
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Law of Conservation of Momentum |
The total momentum of objects that interact, stays the same in the absence of unbalanced forces. |
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Gravitational Acceleration |
The acceleration on an object caused by gravity (typically about 9.8 m/s/s). This disregards outside factors like air resistance and friction. |
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Projectile Motion |
A form of motion in which a projectile, is thrown near the earth's surface, and it moves along a curved path under the action of gravity only. (typically an arc or a parabola) |
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Free Fall |
A fall in which gravity is the only force pulling on the object. Factors like air resistance and friction do not act upon the object's fall. |
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Centripetal Force |
A force that keeps an object moving in a circular path, and directs it to the center of the circular path in which the object travels. |
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Terminal Velocity |
The greatest velocity a falling object can reach; when the force of air resistance is equal to the pull of gravity on the object (weight). The object no longer accelerates, because it maintains this speed until it hits the ground. |
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Acceleration |
The difference of speed or direction an object travels, in a set time. (measured in m/s/s) Velocity final minus velocity initial then divided by time
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