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Describe a stone falling off a tabletop in terms of both kinetic energy and potential energy?
Sitting on the table the stone has potential energy, relative to the ground, of weight times height, mgh. It has zero kinetic energy so its total energy is E = 0 + mgh. When it begins falling it loses potential energy (as it loses height) and gains kinetic energy ( as it picks up speed) so the sum stays the same as initially E = KE + PE = mgh. Just before it hits the ground all of its potential energy is gone and has been transformed into kinetic energy. So the kinetic energy at the bottom (1/2)mv^2 will equal the potential energy at the top.
What is the amount of work done by the force of gravity when a stone of mass'm' is dropped from a multi - stroreyed building of height 'h'?
It's exactly the gravitational potential energy that the stone had, relativeto the ground, before it was dropped:M G H = (9.8) x (the stone's mass) x (the height of the building) joules
A stone is dropped from a window 5m high at what speed does it hit the ground?
Potential energy refers to the energy of an object that is released as kinetic energy when it falls back to the ground. When a stone is dropped from a height of 5m, its speed when it hits the ground is 9.9 m/s.
How is energy transformed to other forms of energy?
In many different ways, depending on the specific type of energy transformation. Here are just a few examples:A stone is thrown up, getting slower and slower. Kinetic energy is transformed into potential energy. On its way down, the same stone gets faster and faster again. Potential energy is transformed to kinetic energy.Part of its kinetic energy is lost to friction. The kinetic energy is converted to heat energy.When it strikes the ground, it makes a sound. Kinetic energy is transformed to sound energy. (However, you can expect most of the energy to be converted into heat energy.)
What can be said about the potential energy and kinetic energy of the stone as it falls?
The longer it falls the more kinetic energy it gets while decreasing it's potential energy.
Describe a stone falling off the tabletop in terms of both kinetic energy and potential energy?
Sitting on the table the stone has potential energy, relative to the ground, of weight times height, mgh. It has zero kinetic energy so its total energy is E = 0 + mgh. When it begins falling it loses potential energy (as it loses height) and gains kinetic energy ( as it picks up speed) so the sum stays the same as initially E = KE + PE = mgh. Just before it hits the ground all of its potential energy is gone and has been transformed into kinetic energy. So the kinetic energy at the bottom (1/2)mv^2 will equal the potential energy at the top.
What is an example of gravitational potential energy tranforming in kinetic energy?
A falling stone.
How does velocity have an effect on kinetic energy?
The summation of potential and kinetic energy of an object is constant. When the potential energy of an object decreases the kinetic energy increases. Assume a falling stone from some high point above ground. At the beginning, the potential energy is maximum while the kinetic energy is minimum or zero. While the stone is falling, the kinetic energy increases while the potential energy increases (with the summation of both is constant). When the stone reaches the ground, the kinetic energy is maximum and the potential energy is zero.
Elastic energy is the total potential and kinetic energy in a system?
No. For example a falling stone is converting potential energy of gravitational attraction into kinetic energy, and there is no elastic energy.
Describe a stone falling off a tabletop in terms of both kinetic energy and potential energy?
Sitting on the table the stone has potential energy, relative to the ground, of weight times height, mgh. It has zero kinetic energy so its total energy is E = 0 + mgh. When it begins falling it loses potential energy (as it loses height) and gains kinetic energy ( as it picks up speed) so the sum stays the same as initially E = KE + PE = mgh. Just before it hits the ground all of its potential energy is gone and has been transformed into kinetic energy. So the kinetic energy at the bottom (1/2)mv^2 will equal the potential energy at the top.
What is the amount of work done by the force of gravity when a stone of mass'm' is dropped from a multi - stroreyed building of height 'h'?
It's exactly the gravitational potential energy that the stone had, relativeto the ground, before it was dropped:M G H = (9.8) x (the stone's mass) x (the height of the building) joules
A stone is dropped from a window 5m high at what speed does it hit the ground?
Potential energy refers to the energy of an object that is released as kinetic energy when it falls back to the ground. When a stone is dropped from a height of 5m, its speed when it hits the ground is 9.9 m/s.
How is energy transformed to other forms of energy?
In many different ways, depending on the specific type of energy transformation. Here are just a few examples:A stone is thrown up, getting slower and slower. Kinetic energy is transformed into potential energy. On its way down, the same stone gets faster and faster again. Potential energy is transformed to kinetic energy.Part of its kinetic energy is lost to friction. The kinetic energy is converted to heat energy.When it strikes the ground, it makes a sound. Kinetic energy is transformed to sound energy. (However, you can expect most of the energy to be converted into heat energy.)
Which is the greater energy the potential energy or kinetic energy?
Typically higher. Consider a gas. The air you breath is made up of billions of particles flying around all over the place. When the air is warm, these particles move faster than if the air was cold. In that sense, temperature is higher if kinetic energy is great.
What can be said about the potential energy and kinetic energy of the stone as it falls?
The longer it falls the more kinetic energy it gets while decreasing it's potential energy.
What can be said about the potential and kinetic energy of the stone as it falls?
we know that according to law of conservation of energy "Energy can neither be created nor destroy, but it can only change from one form to another " just like this before the stone was being thrown , it possessed P.E (potential energy) when when it was thrown it's P.E was converted into K.E (kinetic energy) and when it striked the ground it's K.E was converted again into P.E.
A boy will target a bird on a seven meter tree with a stone The bird will likely receive greater PE from the stone because?
I think what is being suggested here is that the kinetic energy of the stone will have reduced considerably by the time it reaches the bird 7 meters up, but the potential energy will have increased correspondingly. Suppose the stone just reaches 7 meters, its kinetic energy will have all been turned into potential energy, but the bird will only obtain that PE if the stone sticks to it, otherwise the stone just falls back to earth and regains its kinetic energy before impact.
