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33 Cards in this Set
- Front
- Back
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Force |
something that causes a change in the motion of an object |
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Work |
using a force to move an object a distance |
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Mechanical Advantage |
the ratio of the output force to the input to the input force applied to a mechanism |
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Newtons 1st Law |
An object in motion will stay in motion and an oject at rest will stay at rest unless it is stopped by an unbalanced force |
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Newtons 2nd Law |
Acceleration is produced when a force acts upon a mass |
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Newtons 3rd Law |
Every action has an equal and opposite reaction |
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Units of Force |
Newtons |
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Units of Work |
Joule |
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Units of Mechanical Advantage |
There is no unit because the input and output forces cancel each other out |
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Equation for Force |
F=ma |
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Equation of Work |
Work= FxD |
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Chemical Energy |
energy stored in the bonds of chemical compounds |
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Mechanical Energy |
the sum of kinetic energy and potential energy |
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Thermal Energy |
the energy that comes from heat |
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Electromagnetic Energy |
the radiant energy released by certain electromagnetic processes |
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Electrical Energy |
the energy newly derived from electric potential energy and kinetic energy |
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Nuclear Energy |
nuclear fission, atoms are split to release the energy |
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Conduction |
the process by which heat energy is transmitted through collisions between neighboring molecules |
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Convection |
heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it |
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Radiation |
the emission or transmission of energy in the form of waves or particles through space |
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Kinetic Energy |
energy that it possesses due to its motion |
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Potential Energy |
potential energy is a result of gravity pulling downwards |
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Screw |
a shaft that has a in inclined groove along its surface |
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Wedge |
a double-inclined plane (both sides are inclined) that moves to exert a force along the lengths of the sides |
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Pulley |
a wheel with a groove along its edge, where a rope or cable can be placed |
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Inclined Plane |
a plane surface set at an angle to another surface |
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Wheel and Axle |
a circular device that is attached to a rigid bar in its center |
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Lever 1st Class |
have the fulcrum placed between the load and the effort, as in the seesaw, crowbar, and balance scale |
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Lever 2nd Class |
have the load between the effort and the fulcrum; wheelbarrow is a second-class lever |
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Lever 3rd class |
have the effort placed between the load and the fulcrum, a hammer is a 3rd class lever |
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Weight |
the force of gravity on the object |
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Equation of Weight |
W=mg |
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