Velma is in a train headed north past Mort at 30 m s Velma

Last updated: 4/26/2023

Velma is in a train headed north past Mort at 30 m s Velma has a slingshot that can shoot pebbles at 10 m s Velma shoots a pebble toward the rear of the train Velma observes the pebble s velocity to be a 40 m s north b 20 m s north c 10 m s north d 10 m s south e 20 m s south