A tennis balls in the air and the potential energy increases. At the same time, it’s kinetic energy___because the velocity a.) increases;increases
b.) decreases; increases
c.) decreases;decreases
d.) increases;decreases

Iwill give 30 points to whoever answers ! what is the formula for actual mechanical advantage and ideal mechanical advantage?

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

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)