Define vector and scalar with example of each.
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Answer:
- Vectors - These are those quantities which have both magnitude as well as direction. Example - velocity, displacement.
- Scalar - These are those quantities which express only magnitude. Example - Speed, distance.
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Explanation:
Scalar quantities are defined by a magnitude with no applicable direction. In contrast, vector quantities must have both magnitude and direction of action.
The product of a vector quantity and a scalar quantity will always be a vector quantity. Force results from the product of mass (scalar) and acceleration (vector). Weight is a type of force, generated by the acceleration of gravity.
Voltage is a scalar quantity and can be calculated by the product of current (scalar) and resistance (scalar).
Work is a vector quantity and can be calculated by the product of a force (vector) and displacement (vector).
Velocity is a vector and can be calculated by the quotient of displacement (vector) per unit time (scalar).
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