Newton's Laws of Motion

Front

Velocity Noun

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[vuh-los-i-tee]

Back

Velocity

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The speed of an object in a given direction, which remains constant unless acted upon by an external net force.

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Example: A ball is pushed by a spring, showing velocity as it moves in a specific direction.

Front

Inertia Noun

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[in-ur-shuh]

Back

Inertia

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The natural property of an object to resist changes in its state of motion, whether it is at rest or moving.

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Example: A box on a car keeps moving forward when the car stops, showing inertia.

Front

Mass Noun

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[mas]

Back

Mass

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The amount of matter contained within a physical body, which is also the measure of an object's inertia.

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Example: A balance scale shows a rock outweighing a feather, illustrating mass as the amount of matter.

Front

Acceleration Noun

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[ak-sel-uh-rey-shuhn]

Back

Acceleration

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The rate at which an object's velocity changes over time, produced when a net force acts on a mass.

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Example: The image shows how force, mass, and acceleration are related using the formula F=ma, highlighting acceleration as a result of force acting on mass.

Front

Force Noun

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[fors]

Back

Force

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A push or pull upon an object resulting from its interaction with another object, calculated as mass times acceleration.

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Example: A child pushing a box and another pulling it with a rope shows how force moves objects.

Front

Action Force Noun

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[ak-shuhn fors]

Back

Action Force

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The initial force exerted by one object on a second object, as described in Newton's third law of motion.

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Example: A person pushing a box shows the action force applied to the box.

Front

Reaction Force Noun

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[ree-ak-shuhn fors]

Back

Reaction Force

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The force exerted by the second object back on the first, which is equal in strength and opposite in direction.

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Example: A person pushes a wall; the wall pushes back with equal force.