ingrid is participating in a relay race. while jogging at 9 km/h, she tosses a relay stick at 16 km/h to her…
ingrid is participating in a relay race. while jogging at 9 km/h, she tosses a relay stick at 16 km/h to her teammate, who is standing still. how fast is the relay stick moving relative to ingrid? 8 km/h 9 km/h 16 km/h 25 km/h
Answer
Explanation:
Step1: Understand relative - velocity concept
When Ingrid tosses the relay - stick, the velocity of the stick with respect to an external stationary observer is the sum of Ingrid's velocity and the velocity at which she tosses the stick. But we want the velocity of the stick relative to Ingrid. When Ingrid tosses the stick, the velocity of the stick relative to her is just the velocity at which she throws the stick because she is the reference frame. Her own motion does not affect the relative velocity of the stick with respect to her.
Step2: Identify the relative velocity
The velocity at which she tosses the stick is 16 km/h. So the velocity of the stick relative to Ingrid is 16 km/h.
Answer:
16 km/h