Answer: Her speed is 4.4 m/s, and her velocity is 0 m/s.
Explanation:
Formulae :[tex]\text{Speed}=\dfrac{\text{Distance}}{\text{Time}}[/tex]
[tex]\text{Velocity}=\dfrac{\text{Displacement}}{\text{Time}}[/tex]
Given: Length of track start to finish= 400 meters
After completing its 4 laps, total distance covered = 400 × 4 = 1600 meters
Time taken by Lila = 6 minutes
= 6 × 60 seconds [There are 60 seconds in 1 minute.]
= 360 seconds
Then, [tex]\text{Speed}=\dfrac{1600}{360}=\dfrac{40}{9}m/s[/tex]
[tex]= 4.44\ m/s[/tex]
But from start to finish displacement = 0 m [displacement is the shortest distance between starting point to the finishing point]
So, [tex]\text{Velocity}=\dfrac0{360}=0\ m/s[/tex]
Hence, Her speed is 4.4 m/s, and her velocity is 0 m/s.
