An object travels North at #7 m/s# for #3 s# and then travels South at #9 m/s# for # 4 s#. What are the object's average speed and velocity?
1 Answer
Jan 29, 2017
Average speed is
Explanation:
As the object travels North at
the displacement is
then the object travels South at
the displacement is
Hence, net displacement is
As total distance covered is
average speed is
But average velocity is