The Correct Answer is Velocity. • The physical quantities which are specified with the magnitude or size alone are called scalar quantities. For example, length, speed, work, mass, distance, entropy, energy, etc. • Vector quantities refer to the physical quantities characterized by the presence of both magnitude and direction. For example, velocity, displacement, force, torque, momentum, acceleration, etc. +-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------------+ | Physical quantity | Definition | SI Unit | +-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------------+ | Velocity | The velocity of an object is the rate of change of its position with respect to a frame of reference and is a function of time. | meter/second | | Distance | Distance refers to "how much ground an object has covered" during its motion. | Meter | | Entropy | It is an extensive property of a thermodynamic system. It represents the unavailability of a system's thermal energy for conversion into mechanical work, often interpreted as the degree of disorder or randomness in the system | Joules per kelvin | | Energy | It is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. | Joule | +-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------------+