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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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∙ 14y ago
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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.
What is teminal speed?
Terminal velocity that occurs during free fall describes the velocity at which drag force from the air becomes equal to the force from the weight of an object, and the object no longer accelerates, causing velocity to remain constant.
What happens to free-fall velocity when air resistance equals weight?
If air resistance equals the force of gravity, the object will cease to accelerate, so its velocity will remain constant.
When you drop a potato chip what kind of energy does it have as it falls?
When a potato chip, or any other object, falls, it has Potential Energy (energy of position) which is converted during the fall to Kinetic Energy (energy of motion).
How many times during one rise and fall of the ball are the gravitational potential and kinetic energy equal?
only at the start & end of the rise & fall
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.
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.
What is teminal speed?
Terminal velocity that occurs during free fall describes the velocity at which drag force from the air becomes equal to the force from the weight of an object, and the object no longer accelerates, causing velocity to remain constant.
Is hail thermal energy?
No. Hail consists of pieces of ice that fall during a thunderstorm. The energy they have is kinetic energy.
What happens to free-fall velocity when air resistance equals weight?
If air resistance equals the force of gravity, the object will cease to accelerate, so its velocity will remain constant.
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.
How does kinetic energy and potential energy switch?
work=change in kinetic energy, doing work on an object by moving it up increases that object's potential energy because it has the POTENTIAL to fall due to gravity. kinetic energy is lost in the movement of the object. However, throughout an entire closed system, the total energy in joules (or kinetic enery plus potential energy) does remain constant. this is useful because the initial energy and the final energy most be equal, and if thats true, then initial kinetic energy plus initial potential energy must equal final kinetic energy plus final potential energy. does that help?
When do both hemisphere receive the same amount of the suns energy?
during the fall or spring equinox.
When you drop a potato chip what kind of energy does it have as it falls?
When a potato chip, or any other object, falls, it has Potential Energy (energy of position) which is converted during the fall to Kinetic Energy (energy of motion).
How many times during one rise and fall of the ball are the gravitational potential and kinetic energy equal?
only at the start & end of the rise & fall
What occurs when objects free fall near the Earths surface constant acceleration?
Yes, exactly. Free fall results in constant acceleration.
As a ball falls downward what energy decreases and what energy increases?
As a ball fall downwards, it's velocity continuously increases, therefore the kinetic energy increases. As the height from the ground level decreases, the potential energy decreases. Further, the total mechanical energy remains constant throughout the motion.
