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Why is acceleration a scalar or a vector quantity?

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Acceleration is vector quantity. Because it has magnitude as well as direction. As per the fundamental quantity, there are two quantities which describes the physical quantity according to their magnitude and direction. read more

Acceleration is a vector quantity and not a scalar, because it has both magnitude and direction. Since the definition of acceleration is “rate of change of velocity” or “change in velocity in a single unit of time”, it means velocity is always involved which is already a vector quantity. read more

It say, any vector quantity when multiplied by a scalar, the product is a vector. Here, change in velocity (whose unit is meter per second ) is multiplied by a scalar quantity 1/change in time. So, the product of the velocity vector and the scalar 1/change in time is a vector which is defined as acceleration. read more

Acceleration is a vector quantity because it has both magnitude and direction. When an object has a positive acceleration, the acceleration occurs in the same direction as the movement of the object. When an object has a negative acceleration (it's slowing down), the acceleration occurs in the opposite direction as the movement of the object. read more

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Scalars and Vectors
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Is acceleration vector or scalar?
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