Which statement is true? speed is a scalar quantity and velocity is a vector quantity. speed and velocity are both scalar quantities. speed and velocity are both vector quantities. speed is a vector quantity and velocity is a scalar quantity. speed and velocity are neither a scalar quantity nor a vector quantity.

Answer : The correct option is, Speed is a scalar quantity and velocity is a vector quantity.

Explanation :

Speed : It is defined as the distance traveled by the object per unit time. It is a scalar quantity because it does not depends on the direction of an object but it depends on the magnitude of the object. The unit of speed is, meter/second or m/s.

For example : The speed is written as, 44 m/s.

Velocity : It is defined a the displacement of an object with respect to the time. It is a vector quantity because it depends on both direction and as well as on magnitude of the object. The unit of velocity is, meter/second or m/s.

For example : The velocity is written as, 44 m/s north.

Hence, the correct option is, Speed is a scalar quantity and velocity is a vector quantity.

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