As you’re sitting in your chair, your weight acts as a downward force on the chair. Why then does the chair not sink into the ground?
A)	because of its weight
B)	because it feels an upward directed support force from the ground it is pushing down on
C)	because of inertia – the resistance to changes in motion.
D)	because of momentum conservation.
Answer:B
As you’re sitting in your chair, your weight acts as a downward force on the chair. Why then does the chair not sink into the ground?
A)	because of its weight B)	because it feels an upward directed support force from the ground it is pushing down on C)	because of inertia – the resistance to changes in motion. D)	because of momentum conservation.