So lets rewrite the velocity in meter per seconds.Average Velocity- 400m/180sNow we need to simplify so we can see how far she runs every single second.Simplifying...Average Velocity- 2.......
Now, they will want you to change this into a meters per second velocity. (m/s)
So, the distance is okay as it is already in meters. However we need to change the minutes to seconds. So, since we know there are 60 seconds in a minute, and she ran the race in 3min, we know now that she ran the race in 180 seconds. So lets rewrite the velocity in meter per seconds.
Average Velocity- 400m/180s
Now we need to simplify so we can see how far she runs every single second.
Simplifying...
Average Velocity- 2.22m/s
Velocity is a vector. It has magnitude and direction. So the question asks you to find a vector, but never mind the direction. That is fortunate, since there is insufficient information to calculate a direction. In other words, it is asking for average speed. Speed does not have to be in any particular direction. It is an oddly worded question.
Speed = 400m/3 mins = 133.333 m/min or 2.222 m/s
