Two objects are dropped from a tall cliff: a sheet of paper and a ball made of a crumpled sheet of paper. You know from experience in your life that you should not neglect air resistance for this problem, as the flat sheet of paper behaves very differently than the ball does as they fall, even though they have the same mass. Question 1: When the two objects are dropped, which has the larger gravitational force acting on it? a. The sheet of paper b. The crumpled ball c. The forces are the same d. Cannot be determined Question 2: When the two objects have been falling for a while and have reached their terminal velocity, which has the larger drag force acting on it? a. The sheet of paper b. The crumpled ball c. The forces are the same d. Cannot be determined Question 3: The drag force Fd acting on an object is proportional to Av^2 where A is the cross sectional area of the object (how much of the object is facing the direction of motion) and v is the magnitude of its velocity. Which of the following correctly describes the situation that we will observe?
Two objects are dropped from a tall cliff: a sheet of paper and a ball made of a crumpled sheet of paper. You know from experience in your life that you should not neglect air resistance for this problem, as the flat sheet of paper behaves very differently than the ball does as they fall, even though they have the same mass.
Question 1: When the two objects are dropped, which has the larger gravitational force acting on it?
a. The sheet of paper
b. The crumpled ball
c. The forces are the same
d. Cannot be determined
Question 2: When the two objects have been falling for a while and have reached their terminal velocity, which has the larger drag force acting on it?
a. The sheet of paper
b. The crumpled ball
c. The forces are the same
d. Cannot be determined
Question 3: The drag force Fd acting on an object is proportional to Av^2 where A is the cross sectional area of the object (how much of the object is facing the direction of motion) and v is the magnitude of its velocity. Which of the following correctly describes the situation that we will observe?
a. The sheet of paper will fall in the same amount of time as the ball. Gravitational acceleration affects all objects the same, so the two will take the same amount of time to fall.
b. The sheet of paper will fall more slowly than the ball. They will have the same drag force, but because the sheet is thin it has a smaller area than the ball so its velocity will also be small.
c. The sheet of paper will fall more slowly than the ball because it has a larger drag force. This force translates to a larger drag acceleration, which slows the sheet more than the ball is slowed.
d. The sheet of paper will fall more slowly than the ball. They will have the same drag force, but because the sheet has a larger area than the ball, it will have a smaller velocity.
Please answer all THREE questions....
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