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Let's assume the object is falling down (this is only one case of free fall). Its speed increases, therefore, its kinetic energy increases. However, to compensate, the object loses energy of position - potential energy. The sum of the two, kinetic energy + potential energy, remains constant, as long as no other forces (other than gravity) act on the object.
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Can an object in free fall has a constant momentum?
Yes, an object in free fall can have a constant momentum if no external forces are acting on it. In free fall, the only force acting on the object is gravity, which causes a constant acceleration. As long as no external forces are present, the momentum of the object will remain constant.
Energy conservation during free-fall?
During free-fall, potential energy is converted into kinetic energy as an object falls due to gravity. This conversion process is an example of energy conservation, where the total mechanical energy (potential energy + kinetic energy) of the object remains constant throughout the fall in the absence of external forces like air resistance.
How is the conservation of energy applied to an object in free fall from a height h to the ground?
In free fall, the object converts its potential energy at height h into kinetic energy as it falls. The conservation of energy principle states that the total energy (sum of potential and kinetic energy) of the object remains constant if we ignore factors like air resistance. Therefore, as the object falls from height h to the ground, its potential energy decreases while its kinetic energy increases, with the total mechanical energy remaining constant throughout the fall.
What happens to free-fall velocity when air resistance equals weight?
When air resistance equals weight, the net force on the object becomes zero, resulting in a constant velocity known as the terminal velocity. In the case of free fall, the object will continue to fall at this terminal velocity as long as the forces remain balanced.
Which properties of a ball is conserved as it falls freely in a vacuum?
The mechanical energy of the ball is conserved as it falls freely in a vacuum, meaning the sum of its potential and kinetic energy remains constant. Additionally, the total momentum of the ball is conserved during its free fall.
Can an object in free fall has a constant momentum?
Yes, an object in free fall can have a constant momentum if no external forces are acting on it. In free fall, the only force acting on the object is gravity, which causes a constant acceleration. As long as no external forces are present, the momentum of the object will remain constant.
Energy conservation during free-fall?
During free-fall, potential energy is converted into kinetic energy as an object falls due to gravity. This conversion process is an example of energy conservation, where the total mechanical energy (potential energy + kinetic energy) of the object remains constant throughout the fall in the absence of external forces like air resistance.
Is it conservation of mechanical energy when skydivers drop in the air at a constant rate and why?
No. In free fall, where mechanical energy is conserved, the falling object would go faster and faster. In this case, to fall at a constant speed, mechanical energy is lost, due to friction.
How is the conservation of energy applied to an object in free fall from a height h to the ground?
In free fall, the object converts its potential energy at height h into kinetic energy as it falls. The conservation of energy principle states that the total energy (sum of potential and kinetic energy) of the object remains constant if we ignore factors like air resistance. Therefore, as the object falls from height h to the ground, its potential energy decreases while its kinetic energy increases, with the total mechanical energy remaining constant throughout the fall.
What happens to free-fall velocity when air resistance equals weight?
When air resistance equals weight, the net force on the object becomes zero, resulting in a constant velocity known as the terminal velocity. In the case of free fall, the object will continue to fall at this terminal velocity as long as the forces remain balanced.
Which properties of a ball is conserved as it falls freely in a vacuum?
The mechanical energy of the ball is conserved as it falls freely in a vacuum, meaning the sum of its potential and kinetic energy remains constant. Additionally, the total momentum of the ball is conserved during its free fall.
Is hail thermal energy?
No. Hail consists of pieces of ice that fall during a thunderstorm. The energy they have is kinetic energy.
How many times during one rise and fall of the ball are the gravitational potential and kinetic energy equal?
During one rise and fall of the ball, the gravitational potential energy and kinetic energy are equal two times: at the highest point (when all energy is potential) and at the lowest point (when all energy is kinetic).
Why would there be more gravitational potential energy than kinetic energy?
There would be more gravitational potential energy than kinetic energy when an object is at a high elevation or position above the ground, where the gravitational potential energy is proportional to the height of the object. As the object falls, the potential energy is converted to kinetic energy, so at any point during the fall, the sum of potential and kinetic energy remains constant.
Does poison ivy die in the fall, or does it remain dormant until the following spring?
Poison ivy does not die in the fall; it remains dormant during the winter and regrows in the spring.
Why does a spinning top never remain in motion forever?
The force of friction will eventually steal away the energy of the spinning top, and it will fall over.
Can you fall up?
No, falling up the stairs is a common grammatical error. The proper expression is tripping up the stairs. You cannon fall up because according to physics: 1. Energy = potential energy + kinetic energy but energy is always the same and constant 2. When you fall kinetic energy increases and so in order for energy to remain the same potential energy must decrese. 3. Potential energy is equal to the mass, gravity, and height. Since mass and gravity are not changing but potential energy is the height then MUST decrease.
