Question

question 5
1 pts
a physicist removes all of the air from a room so that there is a vacuum inside the room, and there can be no air resistance. the physicist then drops a ball from the top of a ladder. select all of the statements that are true for the ball as it is falling.
the ball is not in equilibrium
the ball is in equilibrium
the net force on the ball is non - zero
the net force on the ball is equal to zero.

Explanation:

1. Equilibrium Concept: An object is in equilibrium when the net force acting on it is zero (either at rest or moving with constant velocity).
2. Forces on the Falling Ball: In a vacuum, the only force acting on the falling ball is gravity (weight). Since there is no air resistance to balance gravity, the net force on the ball is equal to its weight (non - zero).
3. Conclusion on Equilibrium: Because the net force is non - zero, the ball is accelerating (its velocity is changing as it falls). An object with a non - zero net force is not in equilibrium. So, "The ball is not in equilibrium" and "The net force on the ball is non - zero" are true.

Answer:

• The ball is not in equilibrium
• The net force on the ball is non - zero