Question

a vector quantity is a quantity which has both magnitude and direction. Here in the given options, speed is a scalar quantity but not the vector quantity."

Answer 1

Because speed has only magnitude.

As speed is distance covered in given time interval .And distance is also a scalar quantity.

So speed is also a scalar quantity.

Hope it will help you:)

Answer 2

In everyday use and in kinematics, the speed of an object is the magnitude of the change of its position; it is thus a scalar quantity.