Determine the net force acting on the object. Then, write whether or not there will be a change in motion. If yes, write the direction the object will move in.

D. most models represent a real world object in a simpler way

C) electrons encircling a nucleus with neutrons and protons

The density of water is 1 g/cm cubed and in order for the pebble to sink its density has to be greater than the density of water and in order for the twig to float its density has to be less than the density of water