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

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

An object travels North at 2 m/s2 m/s for 4 s4 s and then travels South at 3 m/s3 m/s for 2 s 2 s. What are the object's average speed and velocity?