Top Answer

Zero.

You need to think in terms of "frame of reference" as in what are you comparing the rock to. If you are an observer sitting next to the rock then the kinetic energy of the rock RELATIVE TO YOU is zero - I.E. the rock isn't moving relative to you and thus has no kinetic energy - energy of motion - relative to you.

If you are an observer sitting a million miles from earth watching the rock then it is zipping around at 1000 miles per hour as the earth spins on its axis and it has significant kinetic energy RELATIVE TO YOU. You need to think in terms of "frame of reference" as in what are you comparing the rock to. If you are an observer sitting next to the rock then the kinetic energy of the rock RELATIVE TO YOU is zero - i.e. the rock isn't moving relative to you and thus has no kinetic energy - energy of motion - relative to you.

If you are an observer sitting a million miles from earth watching the rock then it is zipping around at 1000 miles per hour as the earth spins on its axis and it has significant kinetic energy RELATIVE TO YOU. ---- So we don't get bored, no kinetic and no gravitational potential energy.

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This is considered kinetic energy because it is moving. If it was potential energy, it would be just sitting, with stored energy.

They can be in any relationship. If you throw a stone up into the air you impart kinetic energy to it. As it rises, it loses kinetic energy and gains potential energy until it reaches its maximum height. If you were to reach up and hold it there the stone would retain that maximum potential energy and, because it would remain motionless, it would have no kinetic energy. Once allowed to fall from its maximum height the stone would give up its potential energy gradually and gain kinetic energy as it sped up towards the ground. When it hit the ground it would have no potential energy (with respect to ground level) but maximum kinetic energy.

It has potential energy which would be converted to kinetic energy if the cup falls off the table.

The kinetic energy would be the energy of a piece of snow hurtling through the air. The potential energy would be calculated based on how far the piece of snow has to go to reach the ground.

The type of energy of a boulder sitting on a cliff is potential energy. Potential energy is possible energy as opposed to actual energy. If it were to start rolling down the hill, the energy would change to kinetic energy.

As per the law of conservation of energy as the body approaches the ground its potential energy decreases and so that decrease would be available in the form of increased kinetic energy. So the speed of the body goes on increasing as it falls towards the ground.

Sure. For example, if an object is at ground level, or below, and moving, then its potential energy would be zero or negative; while its kinetic energy would be positive. Note: The reference level for "gravitational potential energy" is quite arbitrary. Often the ground level is chosen.

the opposite of kinetic energy would be potential energy.

Potential energy is energy that has the potential to be moved. Kinetic energy is energy in motion. eg. Potential energy could be like a fire extinguisher that is on the wall it has the potential to fall on the ground . An example of Kinetic energy is would be a moving car, it is in motion .

It gains kinetic energy because it is accelerating. Once it hits the ground, all of it's kinetic energy is converted different types of energy. Example: drop a rock from your head. When it hits the ground it create friction and there fore heat, heat is energy. It also makes a sound when it hits the ground, sound is energy. If you were to take the heat and the sound energy a d add them together, you would get the equal amount of potential energy the rock had when it was at your head ready to drop. Therefore, in this case, the kinetic energy was coverted to heat energy and sound energy.

without kinetic energy nothing would be able to move, because, kinetic energy is energy in motion.

Yes, because potential energy is energy that is stored in an object. Kinetic energy is the energy that is associated with motion. So what you have to have is an object that is in motion but still has more energy that it has yet to convert into kinetic energy. A perfect example of this would be an object that is falling but has not yet hit the ground. This object would have kinetic energy because it is in motion. But it would also have potential energy because it has a ways yet to fall before it lands.

Kinetic energy is the energy of motion.

It is sound because, if it was kinetic energy it would be moving also the definition of kinetic energy is motioned and would have to be moving

The kinetic energy is the energy released by a a object in movement; a car may be an example.

The energy related to the movement is called "kinetic energy". Presumably, the moving baseball would be above ground level, so it would also have gravitational potential energy - assuming you choose to define the ground level as zero.

260 J. At the point of release, assuming the boulder is stationary before release, its potential energy is 260 J and its kinetic energy is zero. As it falls, the potential energy is converted into kinetic energy, but energy is neither gained nor lost, so at the point of contact with the ground its potential energy is zero and its kinetic energy is 260 J. If you want to be particularly critical, it could be argued that during the fall some energy is expended in displacing the air, but for a boulder the amount of energy expended would be a very small proportion of the total.

Any moving object has kinetic energy.

No, not the way you're trying to describe it. But the kinetic energy of a moving object can appear to have different values, depending on how the observer is moving when he measures it. Example: I'm sitting comfortably, reading a book. I doze off, and the book settles down in my lap. What's the kinetic energy of the book ? To the person sitting next to me, the kinetic energy of the book is zero, because it's not moving. But that person and I are sitting in adjacent seats on a transatlantic flight to Europe, cruising along at about 500 mph when I doze off. The scientist down there in his boat, watching us fly over, would not agree that my book has no kinetic energy.

In this case, the kinetic energy would also increase.

If a cat that has a mass of 4.50 kilograms sits on a ledge that is 0.800 meters above ground and it jumps down to the ground, it will have a specific amount of kinetic energy just as it reaches the ground. In this instance, the answer would be 35.3J.

It depends on the ball really. If the ball is a tennis ball then it would produce less kinetic energy so it would bounce for a while before it stops bouncing, but if it is a Shot (Shot Put in Sports), which is a metal ball, it would produce a lot of kinetic energy when it bounces on the ground, so there would be less potential energy. So it depends on the material of the ball

Potential energy

the answer is kinetic energy because with out kinetic energy, energy transformations would not be possible

That would be any object that is above a reference level (often this is the ground level), and doesn't move.