Question

A bird sitting on a tree top at a heigth of 10 m from the ground picks up sticks lying on the ground to build a nest on the tree top. It starts picking up the sticsk at `7:30` a.m. and ends up `7:10` a.m. During this interval it makes 5 trips up and down. Find the averae speed and average velocity of the bird

Answer 1

Total distacne travelled `=2xx10xx5xx5=10m`
Time taken `=7:10-7:00.a.m=10` minutes
`=10xx60s=600s`

Averge speed = `("Total distance")/("Total time")`
`=(100)/(600)=(1)/(6) ms^(-1)`
`=0.166 ms^(-1)`
Total displacement = zero
`:.` Average velocity = zero