An object travels North at #2 m/s# for #4 s# and then travels South at #3 m/s# for # 2 s#. What are the object's average speed and velocity?

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Answer 1 · 2017-06-30T06:15:59

The average speed is #=2.33ms^-1#
The average velocity is #=0.33ms^-1#

The total distance travelled is #d=2*4+3*2=14m#

The total time is #t=4+2=6s#

The average speed is

#barv=d/t=14/6=2.33ms^-1#

The displacement is

#Deltax=2*4-3*2=2m#

The average velocity is

#=(Deltax)/t=2/6=0.33ms^-1#