Force and Velocity

Front

Force Noun

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[forss]

Back

Force

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A push or a pull exerted on an object that is required to change the object's state of motion.

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Example: A person pushing a box shows how force is a push that changes motion.

Front

Speed Noun

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[speed]

Back

Speed

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The rate at which an object covers distance over a period of time, regardless of its direction.

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Example: A car moves a certain distance over time, illustrating speed as distance divided by time.

Front

Velocity Noun

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[vuh-los-i-tee]

Back

Velocity

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The measure of an object's speed in a specific direction, indicating its rate of change in position.

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

Front

Friction Noun

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[frik-shun]

Back

Friction

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A force that resists motion when two surfaces are in contact, acting opposite to the object's movement.

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Example: A box on a surface shows friction opposing the force applied to move it.

Front

Mass Noun

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[mass]

Back

Mass

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The measure of the amount of matter, or substance, that is contained within a physical object.

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Example: A balance scale shows a feather and a rock, illustrating that the rock has more mass.

Front

Collision Noun

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[kuh-lizh-un]

Back

Collision

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An event where two or more objects come into contact and exert significant forces on each other.

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Example: Two balls colliding with arrows showing the direction of force.

Front

Reference Frame Noun

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[ref-er-ens fraym]

Back

Reference Frame

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A system of coordinates or a set of axes used to describe the position and motion of an object.

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Example: The image shows Earth and Moon with arrows indicating velocity and gravitational force, illustrating a reference frame.

Front

Scientific Model Noun

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[sy-en-tif-ik mod-l]

Back

Scientific Model

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A representation of a real-world phenomenon that is difficult to observe, which can be physical, conceptual, or mathematical.

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Example: A model showing planets orbiting the sun to explain the solar system.