define speed , velocity , acceleration and retaradation
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Answer:
The rate of change of motion is called speed
The rate of change of motion in a specified direction is called velocity
the rate of change of velocity is called acceleration
The negative of acceleration is called retardation
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Explanation:
Speed - It is the distance travelled in unit time. SI unit is m/s
Velocity - It is the quantity that gives the speed of the object as well as the direction it is moving.
Accelaration - In short, it is the rate in change of velocity.
Retardation - It is decresing acceleration.
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