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A Plane flying past a non-moving observer has kinetic energy in the reference frame of this observer the same plane has how much kinetic energy in the reference frame which moves with the plane?
Wiki User
∙ 14y ago
Zero.
I am currently sitting in my chair in my room. If the plane is my chair and my room is the reference plane as long as I don't move my chair around the room it has no kinetic energy. Now if I expand my reference plane to an observer on the sun (I know) they are going to see me and my chair hauling butt at about 30km/s around the solar system along with my room my house and the rest of the planet this velocity and my mass mean there is kinetic energy. Ek=.5mv^2
Wiki User
∙ 14y ago
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What a example of kinetic energy?
A bullet racing by a non moving observer has kinetic energy.
What would the kinetic energy of a rock sitting on the ground be?
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.
What is a example of kinetic?
A bullet racing by a non moving observer has kinetic energy.
An object that has NO kinetic energy must be?
An object with zero kinetic energy is at rest. However, since reference frames are relative, the calculation of kinetic energy is done with reference to an arbitrary point.
Is standing kinetic or potential energy?
It is not kinetic energy. Whether or not it is potential energy depends on the frame of reference.
Energy can be formally defined as?
Kinetic energy is the amount of energy in an object due to its motion. It is defined as the amount of work that was required to accelerate the object from rest to its current velocity. In classical Newtonian physics, kinetic energy is calcualted in the following equation.Ek=1/2mv2Where:Ek is the kinetic energy of a body;m is the mass of the body; andv is the velocity of the body.Note that kinetic energy is always relative to the observer's frame of reference. For example, a girl holding a ball still would tell you the ball has no kinetic energy, because it is not moving - it has a velocity of zero, and according to the above equation, the kinetic energy must also be zero. Even if she were in a moving car holding the ball, she would still tell you (correctly) that the ball has no kinetic energy, because from her perspective, the ball is not moving. But from a bystander's perspective on the sidewalk, the ball (and the girl, the car, etc.) would indeed have kinetic energy, because, from the bystander's frame of reference, the ball is moving.
What happens to speed if kinetic energy halved?
Kinetic energy is determined by mass and velocity. The velocity is halved if you double the original mass, so the kinetic energy stays the same (unless the mass added has the same kinetic energy in the observer's reference frame as the original mass).
When does kinetic energy equals zero?
first of all, you'll have to tell abt the type of motion you are dealing with. whether its linear or rotational or simple harmonic. In a simple harmonic system, K.E and P.E becomes when the body has a displacement = A/(root of 2), where A=amplitude.
When an object is laying on the ground what energy does it possess?
After water or anything else falls to the ground it has no potential energy anymore. When mas is elevated it has potential energy. When it falls, the potential is converted to kinetic energy. That energy is then converted to light, heat, sound or compression of the object on to which the mass fell. But then the mass has no more potential energy.
Is it possible for the body to have more kinetic energy than potential energy?
Sure, any object at the reference level or ground level (whatever you define to be the ground level, for your calculations) will have zero potential energy; if it moves, it will have a positive kinetic energy. What's more, if the object is belowthe selected reference level, it will have negativepotential energy. In this case, even if it doesn't move, its kinetic energy (zero) will be greater than its potential energy (which is negative).
What form of energy does an elevator have?
If it is above a chosen reference level (e.g., ground level), it has potential energy. While it is moving, it has kinetic energy.
Total kinetic energy of zero?
Anything that's standing still (within the frame of reference).
