Forces

Science

air resistance

the force that opposes objects moving through the air

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balanced force

forces that are equal but in opposite directions

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centripetal force

the force that causes an object to move in a circle

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compression

part of a wave where particles are pushed together

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force

the push or pull exerted on an object

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free fall

the motion of a falling object when the only force acting on it is gravity

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friction

the force that opposes motion between two surfaces that are touching

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gravity

the attractive force between all objects that have mass

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inertia

the tendency of objects to resist any change in motion

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mass

the amount of matter in an object

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momentum

the product of an object's mass and velocity

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net force

the sum of all forces acting on an object

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sliding friction

the friction that occurs when one solid surface slides over another

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static friction

friction that acts on objects that are not moving

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unbalanced force

forces acting on an object to cause a change in motion

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weight

measure of the force of gravity on an object

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