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Momentum |
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An object traveling at a specific velocity has a qauntity. (all moving objects) |
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Conservation of momentum |
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The total momentum of an isolated system is always constant. When two objects collide, they transfer energy, it is not lost |
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Newton's First Law |
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Inertia, which states that objects in motion tend to stay in motion, and objects at rest tend to stay at rest. Resists any change in motion. |
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Newton's Second Law |
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Describes the relationship between force, mass, and acceleration.States that the force applied on an object equals the mass of the object times the acceleration of the object.F=ma (force= mass * acceleration) |
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Newton (N) |
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The unit that represents a force that accelerates a mass of 1 Kilogram 1meter per second. |
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Joule |
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Is the unit of energy equal to the work done by a force of one newton acting over a distance of one meter. |
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Friction |
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is the force that opposes the relative motion or tendency of such motion of two surfaces in contact. |
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Gravity |
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the force of attraction between all masses in the universe |
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Weight |
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is the force exerted upon an object by virtue of its position in a gravitational field |
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Lever-arm |
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The distance from the axis of rotation to the point where the force is exerted |
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Torque |
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the ability of a force that is applied perpendicularly to rotate an object around and axis, such as a ball on a string, |
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Energy |
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Defined as the abilit to do work. |
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Kinetic energy |
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energy associated with motion. |
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Potential energy |
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is the stored energy that a body has because of its position. ex. when you lift an object up |
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Work |
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defined as the product of the force applied to a object and the distance through which the force is applied. |
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Power |
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is the rate at which work is done. |
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inclined plane |
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a slanted surface used to raise an object. |
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Wedge |
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a moving incined plane |
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Screw |
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an inclined plane wrapped around a clinder |
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Lever |
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A simple machine that is free to move around a fulcrum when force is applied. |
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Pulley |
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A chain or rope wrapped around a wheel. |
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Wheel and axel |
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a lever that rotates in a circle |
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compound machine |
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a combination of two or more simple machines. |
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Efficiency |
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is the work done divided by the energy used to power the machine, or the comparison of work input to work output. |
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