100 J of gravitational potential energy is stored in an object, which is dropped. How much kinetic energy will the object have just before it hits the ground? you many ignore air resistance and friction.

a) 200 J
b) 100 J
c) 50 J
d) 0 J

The key to stability is feedback between the reservoir and the fluxes into and/or out of the reservoir. assume that the rate of outflow from a reservoir depends on the size of the reservoir according to the following relationship: outflow rate= k x (size of reservoir), where k is a constant. a reservoir of water has a volume of 5000 liters, and the rate of outflow at steady state is 25 liters per minute. what is k? (give both the numerical value and its units.) what is the residence time? what is the relationship between k and the residence time?

Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds