Question

If a girl runs around a circular track of length 400m and comes back to initial point in 40s what would be her speed and velocity

Answer 1

$\huge\bold{Given:}$

1.) Length of track = 400m

2.) time taken to come back to initial point = 40 sec

$\huge\bold{To\:Find:}$

1.) Speed

2.) Velocity

$\huge\bold{Calculation:}$

★ Speed :-

=> Speed = Distance/time

=> Speed = 400/40

=> Speed = 10m/s

★ Velocity :-

=> Here, displacement of the girl will be zero as she comes back to her initial position after the given interval of time

=> Velocity = Displacement/time

=> Velocity = 0/40

=> Velocity = 0m/s