Multiple Choice
Katelyn runs along the aisle of a train that moves at 8 m/s. Her speed relative to the floor is 3 m/s. Her speed relative to an observer at rest on the ground is
A) 5 m/s.
B) 11 m/s.
C) either depending on her running direction
D) none of the above
Correct Answer:

Verified
Correct Answer:
Verified
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