Which has more air resistance: a flat sheet of paper or a paper airplane? (1 point)
Responses
a sheet of paper because it has a wider area
a paper airplane because it has a wider area
a paper airplane because it has a less wide area
a sheet of paper because it has a less wide area
a sheet of paper because it has a wider area
A shoe and a shirt are released from the same height. They take different amounts of time to fall to the ground. How can this be explained?(1 point)
Responses
The difference in weight doesn't affect the time, but they are affected differently by air resistance.
The difference in weight doesn't affect the time, but they are affected differently by air resistance.
The masses of the two objects are the same, but they are affected differently by air resistance.
The masses of the two objects are the same, but they are affected differently by air resistance.
The weight is greater on the shoe than on the shirt, but there is equal air resistance on the objects.
The weight is greater on the shoe than on the shirt, but there is equal air resistance on the objects.
The weight is equal on the two objects, but there is more air resistance on the shoe.
The difference in weight doesn't affect the time, but they are affected differently by air resistance.
Use the table of data for two falling rocks to answer the question.
Rock 1 Rock 2
Mass (kg) 2.5 25
Height of Fall (m) 78.4 78.4
Time to Fall (s) 4.0 ?
Based on this data, how many seconds will it take rock 2 to fall?
(1 point)
Responses
1.6 seconds
1.6 seconds
40 seconds
40 seconds
0.4 second
0.4 second
4.0 seconds
4.0 seconds
The correct answer is: a paper airplane because it has a less wide area.
Explanation:
Air resistance is the force that opposes the motion of an object as it moves through the air. It depends on the shape and surface area of the object. Generally, objects with larger surface areas experience greater air resistance.
In this case, a flat sheet of paper has a wider area compared to a paper airplane. When the objects are in motion, the paper airplane will experience less air resistance since it has a smaller surface area facing the oncoming air. This reduced surface area allows the paper airplane to cut through the air with less resistance compared to the flat sheet of paper. Therefore, the paper airplane has less air resistance than the flat sheet of paper.