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Kinetic Energy Calculator

This kinetic energy calculator is a tool which helps you assess the energy of motion. It is based on the kinetic energy formula, which applies to every object in vertical or horizontal motion.


“Energy” is the ability to perform work. Energy exists in different forms and among them is kinetic energy.

When an object's electrons or systems iron is in motion, it shows that they have kinetic energy. Whereas kinetic energy and potential energies are both relative to the surrounding environment, kinetic energy is directly related to the object's speed. To determine the amount of energy required to perform a given action, a kinetic energy calculator is an excellent tool for you.

If you need the best calculator in solving physics equations for the kinetic energy of that object that is rigid, and also help you find missing variables, then the kinetic energy calculator is the best option for you. This article elaborates more in detail.

  • How kinetic and potential energy can be distinguished.
  • Kinetic energy, “equation used”.
  • Kinetic energy is known as "energy in motion".
  • What’s inside the kinetic energy units?
  • Potential and kinetic power (their distinction) in terms of energy.
  • Work-energy theorem and its application.
  • Vibrational kinetic energy (Ek=1/2kx2), Translational kinetic energy (EK=1/2mv2), and Rotational kinetic energy (Ew1/2Iw2) 


An understanding of the dynamic pressure and kinetic energy equations' (interrelationship)

How kinetic and potential energy can be distinguished.

The two main types of energies known are potential and kinetic energies. The energy that is generated by movement is known as kinetic energy. How do you determine kinetic energy? Determination is based on its surroundings.


The mass of a loaded truck restricts it from moving faster as compared to a saloon car that is at a high speed, even with the same engine. With the help of our kinetic energy calculator, you can quickly learn the answer.

One of the major forms of well-known energy is potential energy. For those who aren't familiar with this concept, it's simple: It's a form of energy that has the potential to perform work but does not actively perform or exert any force on other objects. Potential energy can't be found when an object is in its motion but can be found in the position of an object. It's the force that comes from being in a certain place.


Kinetic energy, “equations used”.

Do you want to calculate the mass, velocity, or kinetic energy of an object? Shown below is the kinetic energy formula:

K.E= 1/2 mv2,

  • mass (m)
  • velocity (v)

Here is an example using Kinetic Energy

Problem: The car is traveling at 10 m/s and has a mass of 450 kg. Let’s calculate the amount of kinetic energy the car has.


Let’s solve the problem using the above formula,

The source of kinetic energy is,

K.E= 1/2 × 450 kg ×10 (m/s) 2


=22500 kg × m² / s²


If you want to estimate the amount of energy that is required to move an object, you can use the kinetic energy formula above to solve the problem. Keep in mind that, the velocity is squared when decelerating an item so it means that even a tiny increase in speed has a significant impact on kinetic energy.

Do you need a quick and accurate answer to solve your problems using the formulas shown above? Well, worry no more because your problems might be solved easily with the help of our kinetic energy calculator. On the other hand, you should be aware of this formula’s limitations because relativistic effects become noticeable at higher speeds.

For instance, an object is moving faster than 1% of the speed light, for roughly 2000 km/s, a relativistic energy calculator should be used to calculate as it is the best.


What’s inside the kinetic energy units?

There are SI units for both mass and energy, the unit of mass in the SI system is kg × m² / s². Just like any other form of energy, kinetic energy uses the same units for its measurements. The most common units used in kinetic energy include:

  • The joule (J) is equal to kg × m² / s² in the SI system,
  • The foot-pound (ft-lb) in the imperial system,
  • The electronvolt (eV),
  • The calorie (cal), and the
  • Watt-hour in the imperial system (Wh).

Below are the ratios used to convert kinetic energy units to another unit:

1 J = 0.7376 ft·lb = 6.242·10¹⁸ eV = 0.239 cal = 2.778·10⁻⁴ Wh.

The above ratios show that magnitudes can vary by several orders of magnitude depending on the scale, hence it is convenient to use scientific notation. This can be done by describing them with prefixes such as Mega (Mega- (MeV), kilo- (kcal, kWh), and many more. Our kinetic energy calculator is here for you, worry no more about the units. Simply choose the one that interests you by having to click on it, and the value will be instantly converted.


Potential and kinetic power (their distinction) in terms of energy.

People are often confused by the difference in measurement between kinetic and potential energy, which are both measured in joules. Let us simply differentiate them:

  • Potential energy is stored energy because it is at a standstill,
  • Kinetic energy simply means energy in motion.


To find out more about what potential energy is and how to calculate it, a potential energy calculator is the best to use can be used to calculate the amount of potential energy in an object.


Work-energy theorem and its application.

The total amount of effort exerted on a system is directly proportional to the change in kinetic energy. A mathematical formula known as the Work-Energy Theorem applies here. The example shown below,

W = Kf – Ki 

Where Kf = Final kinetic energy

K= Initial kinetic energy

W = net work done, where:

The final kinetic energy is Kf.

Initial kinetic energy denoted as Ki

W stands for net work done.

Let’s apply the formula above to the illustration below:



According to the Work energy theorem, work done by all forces equals the change in kinetic energy,

Wg + WN + Wf  = Kf – Ki

Where Wg = work done by gravity

WN = normal force's work

Wf = frictional work

Kf = final kinetic energy

Ki = initial kinetic energy.

There are many types of kinetic energy, among them we have,

  1. Translational kinetic energy,
  2. Vibrational kinetic energy,
  3. Rotational kinetic energy.

Translational kinetic energy (EK=1/2mv2)


To put this in simpler terms, translational kinetic energy (TKE) is the energy released when the center of mass (CoM) moves about the velocity of the chemical entity's mass (m/V). Fluids (gases and liquids) will have a random distribution of translational energy because of the random movement of molecules. A kinetic energy calculator is the one used to estimate the amount of energy in the translational kinetic energy.

Vibrational kinetic energy (Ek=1/2kx)2


The oscillations of a particle around an equilibrium position, approximated by harmonic motion, are an example of vibrational kinetic energy. It may be demonstrated as twisting, bending, and stretching depending on the structure. Note that since atoms are subject to forces that change with their spatial location, this means they oscillate.

Rotational kinetic energy (Ew1/2Iw2)

When it comes to chemical changes, rotational kinetic energy (RKE) refers to the energy of a chemical entity that is associated with rotation, where w is the rotational frequency and I is the moment of inertia (the greater I, the closer together hydrogen are).

The types of energies above are all representations of heat radiation, whereby it rises with temperature.


An understanding of the dynamic pressure and kinetic energy equations' (interrelationship).

To express dynamic pressure (as a result of fluid flow), use the following formula:

p = ρ * v² / 2.

The comparison of the equation above to the one for kinetic energy has a lot in common. The kinetic energy per unit volume is another name for dynamic pressure, and density can be thought of as the mass contained within a specific volume. Our kinetic energy calculator is the best and can be used to estimate the dynamic pressure of a fluid in the easiest way possible. Use it now! J will be the dynamic pressure in pa if you replace mass (kg) with density (kg).

An example of kinetic energy is below.

The kinetic energy of the moving bicycles can be found. Our body's energy is first converted into mechanical form when we begin pedaling. This mechanical form begins as potential energy and, as the wheels move, eventually transforms into kinetic energy. Thus the amount of kinetic energy available is increased by its speed. To slow the bike down and bring it to zero energy, brakes are supposed to be applied in the opposite direction where the force is coming from.


Bottom line

With the knowledge you've gained from this article, you should use the kinetic energy calculator, which has plenty of useful features. This calculator will give you peace of mind when working on measurements. A kinetic energy calculator is an excellent tool for you as it will help you to determine the amount of energy required to perform a given action. Energy can be easily measured using this calculator.