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 miles per hour (mph) or kilometers per hour (km/h).

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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 per unit of time. It can be positive (speeding up) or negative (slowing down).

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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 cyclist moving at 15 mph East.

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Example of Acceleration:

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A roller coaster increasing its speed from 20 m/s to 40 m/s 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 is the formula for Speed?

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Speed = Distance / Time.

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What is the formula for Acceleration?

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

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What units are used for Speed?

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Common units for speed include meters per second (m/s), kilometers per hour (km/h), and miles per hour (mph).