An arrow is fired from the top of a cliff of height 22 m. The arrow has an initial velocity of 32 m/s [30° above the horizontal]. a) Calculate the horizontal and vertical components of the rock’s initial velocity.
b) Calculate the time it takes for the arrow to fall to the ground.
c) What is the horizontal displacement of the arrow in this amount of time?

Looking at this barometer, is the air pressure high or low? what type of weather would you expect? high, bad low, bad high, good low, good

Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.