Arunner circles the track exactly 2 times for distance of 800m. it takes 4.0min. what is her average speed in m/s? what is her average velocity?

Calculation of average speed:

we are given

A runner circles the track exactly 2 times for distance of 800m

so, distance is

d=800m

it takes 4.0min

so, t=4min

we know that

1min =60 sec

we can change time into seconds

now, we can use speed formula

now, we can plug it

and we get

............Answer

Calculation of average velocity:

we are given

A runner circles the track exactly 2 times for distance of 800m

so,

displacement =400-400=0m

it takes 4.0min

so, t=4min

we know that

1min =60 sec

we can change time into seconds

now, we can use speed formula

now, we can plug it

and we get

............Answer