Math CentralQuandaries & Queries


Question from kechi, a student:

A boat sails south through Chesapeake Bay. It takes 10 hours to sail 110 kilometers. Describe the boat's motion. Calculate the boat's speed and velocity, showing the calculations. Explain how the boat's speed is different from its velocity


If the boat sails south for 110 kilometers then it is sailing in a straight line. Its speed, or average speed, is the distance over the time, in your case in the units of kilometers per hour. Its speed however a vector so it has a direction.


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