Simon and his friends are standing on a bridge. Simon's friends gently toss pebbles off the bridge. In contrast, Simon throws straight down. Which of these graphs best represents the velocity of simon's pebble as a function of time (t), with t= 0 representing the moment that pebble left simon's hand?

The field lines around one end of a bar magnet are shown below based on the diagram, what can you conclude about the pole of the magnet? a. is a south pole because the field hnes spread out from this end b. a north pole because the field lines spread out from this end c. a nouth pole because the field lines enter the magnet at this end d. is a north pole because the field lines enter the magnet at this end