Explain the type of measurement​

In what direction does the medium move relative to the direction of the wave? explain.

True or false: the revolution of the earth creates day and night as it rotates around the sun

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?