30 m/s North is a measure of what
velocity (speed with a direction)
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"30 m/s North" is a measure of velocity. Velocity is a physical quantity that describes the rate of change of an object's position in a particular direction. In this case, it means that the object is moving with a speed of 30 meters per second in the north direction.
To determine this measurement, you likely need access to information such as speed or distance traveled. If you have the speed and direction of an object's motion, you can use these values to find the velocity. The unit "m/s" stands for meters per second and is commonly used to express speed and velocity.