what is speed ? explain it
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speed refers to how far is an object is moving. It is calculated by the displacement of space per unit of time. Velocity refers to the rate at which an object change its position in a certain direction. It is calculated by displacement it is called speed. It's SI unit is m per second or km per hour.
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speed is the distance travelled per unit time . It is how fast an object is moving . speed is the scaler quantity .
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