Question

An object travels North at `5 m/s` for `3 s` and then travels South at `1 m/s` for `4 s`. What are the object's average speed and velocity?

Answer 1

Average speed = `19/7`m/s
Average velocity=`11/7`m/s

Explanation:

The distance`=5*3+1*4=19m`
Averagr=`19/(3+4)=19/7`m/s
The displacement`=5*3-1*4=11m`
Average velocity`=11/(3+4)=11/7`m/s