in physics terms what does vacuum mean?? i thought they meant a vacuum sweeper?? huh? The question is " The same object is dropped in a vacuum and then in air. Whaich of the parameters( distance,velocity,acceleration) vary and which remain constant during succeding seconds of time
A. in a vacuum
B. in air when terminal velocity from air resistance has been reached?
a vacuum has no air in jt
In physics, the term "vacuum" refers to a space devoid of matter, including air. It is not related to a vacuum sweeper. When an object is dropped in a vacuum compared to in air, there are certain parameters that vary and others that remain constant.
Let's take a look at the parameters you mentioned:
1. Distance: The distance traveled by the object will vary in both a vacuum and in air. However, in a vacuum, the object will experience relatively no resistance to its motion, allowing it to fall freely and cover a larger distance compared to in air.
2. Velocity: The velocity of the object will vary in both a vacuum and in air. Initially, in both cases, the object will accelerate due to the force of gravity. However, in a vacuum, the absence of air resistance means that the object will continue to accelerate at a constant rate, resulting in a continuously increasing velocity. In the presence of air, the object's velocity will increase until it reaches a point called terminal velocity, at which the force of air resistance balances the force of gravity, causing the velocity to remain constant.
3. Acceleration: The acceleration of the object will remain constant in a vacuum, as there is no air resistance to oppose the force of gravity. This means that the object will continue to accelerate at the same rate throughout its fall. In air, the acceleration of the object will decrease as it gains speed, eventually reaching zero when the force of air resistance matches the force of gravity, resulting in terminal velocity.
To summarize, in a vacuum, both distance and velocity will vary continuously, while acceleration remains the same. In air, distance, velocity, and acceleration will vary until the object reaches terminal velocity, at which point only distance remains variable.