The force of gravity on a block of cheese in an elevator at rest is -20 N. If the elevator then begins accelerating down at a rate of -3 m/s^2, what is the normal force of the elevator on the
cheese?

A) 0 N
B) 14N
C) 20 N
D) 26 N

we need to know the time interval during which the force acts. impulse of force = momentum change

the five characteristics of adolescence are biological growth and development, and undefined status, increased decision making, increased pressure and the search of self.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.