Answer : The correct option is 30 meters/second, South.
Explanation :
Velocity : It is defined as the rate of change of position with respect of the time.
Velocity is a physical vector quantity, magnitude and direction are necessary to define it.
The formula of velocity is,
\(v=\frac{\Delta x}{\Delta t}\)
v = velocity
\(\Delta x\) = change in position
\(\Delta t\) = change in time
The unit of position is meter and the unit of time is second.
The SI unit of velocity is meter/second with direction.
Therefore, the correct option is 30 meters/second, South.
