If a boat is moving north at 15 kilometers per hour and a dog on that boat is running south at 8 kilometers per hour, what is the dog's velocity measured from the shore?

a. 7 kilometers north per hour.
b. 23 kilometers north per hour.
c. 15 kilometers north per hour.
d. 150 mph east-south-east.
e. 7 kilometers south per hour.


a

Physics & Space Science

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