If asked to describe a wave, you could say waves are the (10 points) a. movement of particles within a medium. b. disturbance of energy in a material. c. repetitive transfer of particles from one medium to another. d. continuous transmission of energy from one location to the next.

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?