Speed, Velocity & Acceleration

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What is Speed?

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Speed is the distance traveled per unit of time, typically measured in kilometers per hour (km/h) or miles per hour (mph). It does not include direction.

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What is Velocity?

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Velocity is the speed of an object in a specific direction. It is a vector quantity, meaning it has both magnitude and direction.

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What is Acceleration?

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Acceleration is the rate of change of velocity of an object. It can be positive (speeding up) or negative (slowing down) and is measured in meters per second squared (m/s²).

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Example of Speed:

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A car traveling at 60 km/h.

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Example of Velocity:

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A car traveling at 60 km/h North.

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Example of Acceleration:

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A car increasing its speed from 20 km/h to 50 km/h in 5 seconds.

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Difference between Speed and Velocity:

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Speed is a scalar quantity (only magnitude), while velocity is a vector quantity (magnitude and direction).

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What does it mean if an object has a constant speed?

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It means the object is moving the same distance in equal intervals of time without changing its speed.

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What does it mean if an object is accelerating?

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It means the object's velocity is changing over time, either increasing or decreasing.

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How is acceleration calculated?

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Acceleration = (Final Velocity - Initial Velocity) / Time.