An object travels North at $3 m/s$ for $6 s$ and then travels South at $2 m/s$ for $4 s$ . What are the object's average speed and velocity?

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Answer 1 · 2017-07-18T14:02:36

The average speed is $=2.6ms^-1$
The average velocity is $=1ms^-1$

The total distance travelled is $d=3*6+2*4=26m$

The total time is $t=6+4=10s$

The average speed is

$barv=d/t=26/10=2.6ms^-1$

The displacement is

$Deltax=3*6-2*4=10m$

The average velocity is

$=(Deltax)/t=10/10=1ms^-1$

An object travels North at 3 m/s 3 m/s for 6 s6 s and then travels South at 2 m/s 2 m/s for 4 s 4 s. What are the object's average speed and velocity?