The relay stick speed is 16 km/h. The relay stick would have the same velocity relative to Ingrid as the velocity she threw it because she threw it while running 9 km/h and the question asks for how fast it is moving relative to Ingrid, who also started off moving at 9 km/h.
What is velocity?
Velocity is the directional speed of an object in motion as a demonstration of its rate of change in function as determined from a specific body of reference and as measured by a specific popular of the time.
Learn more about Velocity here: https://brainly.com/question/4931057
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