An airplane flying with a horizontal initial velocity of 80 m/s drops a package down to the ground. The plane is initially 490 meters above the ground. a) How long does it take the package to hit the ground?
b) What is the final vertical velocity of the package?
c) What is the horizontal displacement of the package?

PL HELP ME NOW

PL

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

If steel is more dense that lake water, why can a boat float

Asystematic approach to problem solving is called a (an)