Suppose we replace the gliders with two different ones. Glider AA now has a mass of 0.20 kgkg and glider BB has a mass of 0.35 kgkg . Both still have an initial speed of 2.0 m/sm/s toward each other before the collision. Find the final velocity of Glider AA if the collision is elastic. Express your answer in meters per second.

Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.