For the following reaction, the equilibrium constant kc is 2.0 at a certain temperature. bromine can be liquefied easily and removed from the reaction vessel as it is formed. if this is done, how will it affect the equilibrium reaction

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?