A football player does a shuttle run in which he sprints 20 m south, then 15 m north, then 10 m south, and then 5 m north. If his total time is 20 s, what are his displacement and average velocity?

Question

anonymous · Answer

10 m south (-10) and average velocity: 0.5 m/s (possibly -0.5 m/s) depending on if south is considered negative.

ineedhelpfast12 · Answer

@2thfixer2b  but the answer book got 0.75, how is this possible?

anonymous · Answer

I tried literally everything. I explored every answer possible,
the books answer would suggest that the average distance is 15 meters, but it's clearly not.
sorry i couldn't help. I did actually take a rather significantly extensive chunk of time to try and figure this out, but it seems to be an error in the book. By the data given, the velocity SHOULD be 0.5 m/s to the south.

ineedhelpfast12 · Answer

it's fine. I got the same thing as you