Acceleration

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 a period of time.

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Example: A cyclist moving down and up a hill shows motion and acceleration as the position changes over time.

Front

Metric Units Noun

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[met-rik yoo-nits]

Back

Metric Units

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A system of measurement used by the global science community, including units like meters for distance.

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Example: The image shows metric units like meter, gram, and liter with prefixes like kilo and milli, explaining their values.

Front

Position Noun

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[puh-zish-un]

Back

Position

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The specific location of an object, often represented by the symbol 'x' in scientific equations.

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Example: A cyclist's position changes as they move up and down a hill, showing different locations.

Front

Δ (delta) Noun

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[del-tuh]

Back

Δ (delta)

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The Greek symbol used in science and mathematics to represent a 'change in' a specific quantity.

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Example: An object on a slope with arrows shows acceleration, illustrating 'Δ' as change in velocity.

Front

Speed Noun

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[speed]

Back

Speed

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A rate that measures how fast an object is moving, calculated as the change in position over time.

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Example: A car moving along a track shows how speed is calculated as distance divided by time.

Front

Rate Noun

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[rayt]

Back

Rate

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A measure of how one quantity changes in relation to another, such as distance per unit of time.

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Example: A car travels a certain distance over time, illustrating the rate of speed.

Front

Constant Speed Noun

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[kon-stunt speed]

Back

Constant Speed

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A speed that does not change over time, where an object covers the same distance in every equal interval.

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Example: A car moving at a constant speed covers equal distances in equal time intervals, shown with the speed formula.

Front

Supersonic Speed Noun

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[soo-per-son-ik speed]

Back

Supersonic Speed

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A speed that is faster than the speed of sound in a particular medium, also known as Mach 1.

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Example: A rocket moving past a speedometer shows supersonic speed, faster than sound.

Front

Mach 1 Noun

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[mahk wun]

Back

Mach 1

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A unit of speed representing the speed of sound, which is approximately 1,235 km/h in dry air.

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Example: Mach number is the speed of an object divided by the speed of sound.

Front

Speed of Sound Noun

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[speed uv sownd]

Back

Speed of Sound

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The distance a sound wave travels per unit of time, which varies depending on the medium it passes through.

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Example: The image shows how sound waves move through a medium, with areas of compression and rarefaction, explaining the speed of sound.