What Is Force

Front

Force Noun

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[forss]

Back

Force

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A push or a pull that acts on an object, causing a change in the object's motion or position.

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Example: A person pushing a box shows how force can move an object.

Front

Interaction Noun

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[in-ter-ak-shun]

Back

Interaction

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The mutual action between two objects where a push or pull occurs, resulting in a force on each object.

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Example: A child pushes and pulls a box, showing interaction as a force applied in different directions.

Front

Motion Noun

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[moh-shun]

Back

Motion

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The action or process of an object changing its position over time, often as a result of an applied force.

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Example: A basketball's path shows motion as it changes position over time.

Front

Gravity Noun

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[grav-i-tee]

Back

Gravity

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An invisible force of attraction that exists between any two objects that have mass, pulling them toward each other.

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Example: The image shows gravity as a force pulling Earth and another object toward each other.

Front

Balanced Forces Noun

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[bal-ansd for-sez]

Back

Balanced Forces

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Two or more forces acting on an object that are equal in size but opposite in direction, causing no change in motion.

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Example: Two people pulling equally on a rope in opposite directions show balanced forces.

Front

Friction Noun

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[frik-shun]

Back

Friction

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A force that opposes motion when two surfaces are in contact, acting in the direction opposite to the movement.

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Example: A box on a surface with arrows showing friction opposing the applied force.

Front

Newton (N) Noun

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[noo-tun]

Back

Newton (N)

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The standard unit of measurement for force in the International System of Units (SI), named after Sir Isaac Newton.

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Example: The image shows the formula F=ma, explaining how force (N) is calculated using mass and acceleration.

Front

Spring Scale Noun

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[spring skayl]

Back

Spring Scale

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A scientific instrument used to measure force by observing how much a spring stretches or compresses under a load.

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Example: A spring scale measures force by showing how much a spring stretches under a load.

Front

Mass Noun

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[mass]

Back

Mass

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The amount of matter or substance that makes up an object, which remains constant regardless of its location.

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Example: A balance scale shows a feather and a rock, illustrating that mass is the amount of matter in an object.

Front

Weight Noun

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[wayt]

Back

Weight

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The measure of the force of gravity acting on an object's mass, which can change depending on location.

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Example: An apple falling from a tree shows gravity acting on its weight.