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What will the kinetic energy be of an arrow after it is shot if it has a mass of 10 g and has a potential energy of 50 joules before it is shot?
If all of the potential energy is transferred to the arrow's motion as kinetic energy,
then when the shot is complete and before any effect of air resistance has kicked in,
its kinetic energy is 50 joules.
KE = (mass) x (speed)2
50 = (.01) x V2
V = sqrt(5000) = 70.711 meters per second, as it leaves the bow.
Oops! Please excuse us. We thought you were going for the arrow's speed as it left
the bow. Now we notice that you only wanted its kinetic energy. That's 50 joules,
and it doesn't make any difference what its mass is. That was a 10-gram red herring.
What else can I help you with?
A satellite falling to the earth has kentic energy of 182.2 billon Joules and a potential energy of 1.6 billion JoulesWhat is its mechanical energy?
The mechanical energy of the satellite is the sum of its kinetic energy and potential energy. In this case, the mechanical energy would be 182.2 billion Joules (kinetic energy) plus 1.6 billion Joules (potential energy), totaling 183.8 billion Joules.
When an object falls which energy changes to?
As the object falls, it PEG or potential gravitational energy becomes kinetic energy. Before falling, it has for example 10 joules of PEG and 0 joules of Kinetic energy. As it falls, the PEG decreases and the kinetic energy increases, until it hits the ground, when all the energy is dispersed as sound, heat, etc.
If we know the total in a system is 30 joules and we know the poteial energy is 20jolueswhat is the KE?
The total energy in a system is the sum of its potential energy (PE) and kinetic energy (KE). In this case, with a total energy of 30 joules and potential energy of 20 joules, we can use the formula: Total Energy = Potential Energy + Kinetic Energy. So, KE = Total Energy - PE = 30 J - 20 J = 10 joules.
What unit use for work potential and kinetic?
Work uses the same unit as energy. Ideally, you would use the same units for work, potential energy, kinetic energy, or any other type of energy. In the SI, that is the joule.
What can be measured in joules?
Various forms of energy can be measured in joules, such as kinetic energy, potential energy, heat energy, and electrical energy. Joules are a unit of measurement for energy and can be used to quantify the amount of energy present in a system or the amount of work done.
What is a comparison of kinetic and potential energy?
They are both measured in Joules
A satellite falling to the earth has kentic energy of 182.2 billon Joules and a potential energy of 1.6 billion JoulesWhat is its mechanical energy?
The mechanical energy of the satellite is the sum of its kinetic energy and potential energy. In this case, the mechanical energy would be 182.2 billion Joules (kinetic energy) plus 1.6 billion Joules (potential energy), totaling 183.8 billion Joules.
When an object falls which energy changes to?
As the object falls, it PEG or potential gravitational energy becomes kinetic energy. Before falling, it has for example 10 joules of PEG and 0 joules of Kinetic energy. As it falls, the PEG decreases and the kinetic energy increases, until it hits the ground, when all the energy is dispersed as sound, heat, etc.
What does not have the same units as the others Kinetic Energy Momentum Potential Energy or Work?
Momentum does not have the same units as the others. Kinetic energy is measured in joules, potential energy in joules, work in joules, but momentum is measured in kilogram meters per second (kg m/s).
Suppose a falling object loses 7J of potential energy. How much kinetic energy will it gain?
From what I understand: PE - Potential Energy (mgh) KE - Kinetic Energy (1/2 mv2) If one dismisses the friction with air (conservation of energy), a loss of 7 joules for potential energy means a gain of 7 Joules in kinetic energy.
If we know the total in a system is 30 joules and we know the poteial energy is 20jolueswhat is the KE?
The total energy in a system is the sum of its potential energy (PE) and kinetic energy (KE). In this case, with a total energy of 30 joules and potential energy of 20 joules, we can use the formula: Total Energy = Potential Energy + Kinetic Energy. So, KE = Total Energy - PE = 30 J - 20 J = 10 joules.
What unit use for work potential and kinetic?
Work uses the same unit as energy. Ideally, you would use the same units for work, potential energy, kinetic energy, or any other type of energy. In the SI, that is the joule.
Similarities between Kinetic energy potential energy electric energy and gravitational energy?
they are both measured in joules
What is the similarities between kinetic energy and potential energy?
kinetic energy depends on speed an potential energy depends on height and mass
What can be measured in joules?
Various forms of energy can be measured in joules, such as kinetic energy, potential energy, heat energy, and electrical energy. Joules are a unit of measurement for energy and can be used to quantify the amount of energy present in a system or the amount of work done.
What is the unit of kinetic energy?
Joules, all energy is measured in joules.
Does a water fall have kinetic energy?
Yes, it does. Kinetic energy is energy in motion. If you have a waterfall, the energy within it is constantly being moved. If it were perhaps a waterfall that was frozen over, then it would not have kinetic energy; it would have potential energy. Relative to the pool at the bottom, the water at the top has potential energy until it reaches the edge. After it spills over, each kilogram of water loses 9.8 joules of potential energy and gains 9.8 joules of kinetic energy for every meter it falls. When it reaches the bottom, all of the potential energy it had at the top has been converted to kinetic energy.
