An object travels North at #6 m/s# for #3 s# and then travels South at #5 m/s# for # 7 s#. What are the object's average speed and velocity?
1 Answer
May 20, 2017
Average speed is
Average velocity is
Explanation:
The total distance is
The total time is
Therefore the average speed is
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The total displacement is :
#18m " North" + 35m " South" = 17m " South"#
The total time is
Therefore the average velocity is
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Note that the average speed has no direction while the average velocity does (South).