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43 Cards in this Set
- Front
- Back
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The ability to do work...
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energy.
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Stored energy
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Potential Energy
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Energy due to motion
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Kinetic Energy
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The ability to make something move
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Mechanical energy
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The change of an object's position
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Motion
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A fixed, unmoving object
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reference point
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The length something travels
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Distance
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Distance divided by time
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Speed
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Speed at one particular moment
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Instantaneous speed
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Speed divided by time
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Distance
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The distance an object moves over a given amount of time in a certain direction
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Veloctity
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The change in velocity during a period of time
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Acceleration
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A push or pull
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Work
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The Force that keeps objects from moving against other objects
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Friction
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Mass and the velocity determine...
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Momentum
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He formulated the three laws of motion
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Sir Isaac Newton
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First Law of Motion...
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An object tends to stay at the same velocity unless another force causes it to change.
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The resistance to change in motion...
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Inertia
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The pull of one object on another
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Gravity
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The amount of matter in something
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Its Mass
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The gravitational force on somthing
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Weight
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Second Law of Motion
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Force is equal to an object's mass and the acceleration of the object.
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Mass times Acceleration
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Force
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Third Law of Motion
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When one object exerts a force on another object the second object reacts by exerting an equal force back on the first object
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A force acting on something as it moves a certain distance
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Work
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Work is measured in...
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Joules.
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Force is measured in...
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Newtons.
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Force times distance
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Work
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Any object that makes work easier
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Machine
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The force applied to a simple machine
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Effort Force
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The force that works against the effort
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Resistance Force
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A bar that turns on a point
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Lever
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The spot that a lever turns on
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Fulcrum
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A grooved wheel with a rope used to raise or lower something
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Pulley
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This simple machine makes work easier by changing the direction of the force or by reducing the amount of force needed
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Pulley
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The decrease in effort needed to move an object
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Mechanical advantage
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A doorknob is a ...
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wheel and axle
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A block and tackle contains...
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2 fixed pulleys and a moveable pulley
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A flat slanted surface
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Inclined plane
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Two inclined planes put together
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Wedge
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An inclined plane wound around a cylider
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Screw
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Two or more simple machines put together to make work even easier
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Compound machine
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Slide...
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inclined plane
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