Respuesta :
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
[tex]t=4*60sec=240sec[/tex]
now, we can use speed formula
[tex]s=\frac{d}{t}[/tex]
now, we can plug it
and we get
[tex]s=\frac{800}{240}m/sec[/tex]
[tex]s=3.3m/sec[/tex]............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
[tex]t=4*60sec=240sec[/tex]
now, we can use speed formula
[tex]v=\frac{d}{t}[/tex]
now, we can plug it
and we get
[tex]v=\frac{0}{240}m/sec[/tex]
[tex]v=0m/sec[/tex]............Answer
