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Speed and distance are examples of scalar quantities, meaning they only have magnitude. Velocity and displacement are vector quantities, meaning they have both magnitude and direction.

Examples of scalar quantities:

speed (s) - 10 m/s or 36 km/h

distance (d) - 100 m or 0.1 km

Examples of vector quantities:

velocity (v) - 10 m/s [E] or 36 km/h [E]

displacement (Δd) - 100 m [E] or 0.1 km [E]

The value in square brackets (for vector quantities) indicate direction and include, but not limited to:

[S], [N], [E], [W], [45°], [45° E of S], [45° S of E], [forward], [backward] [up/↑], [down/↓], etc...

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