Enter the initial kinetic energy (J) and the final kinetic energy (J) into the calculator to determine the Net Kinetic Energy.

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## Net Kinetic Energy Formula

The following equation is used to calculate the Net Kinetic Energy.

**Enet = Ef – Ei**

Variables:

- Where Enet is the Net Kinetic Energy (J)
- Ei is the initial kinetic energy (J)
- Ef is the final kinetic energy (J)

## How to Calculate Net Kinetic Energy?

The following two example problems outline the steps and information needed in order to calculate the Net Kinetic Energy.

**Example Problem #1:**

- First, determine the initial kinetic energy (J). In this example, the initial kinetic energy (J) is measured to be 100.
- Next, determine the final kinetic energy (J). For this problem, the final kinetic energy (J) is calculated to be 200.
- Finally, calculate the Net Kinetic Energy using the formula above:

Enet = Ef – Ei

Inserting the values from above and solving the equation with the imputed values gives:

Enet = 200 – 100 = 100 (J)

**Example Problem #2: **

Using the same process as example problem 1, we first define the needed variables outlined by the formula. In this case, the values are provide as:

initial kinetic energy (J) = 300

final kinetic energy (J) = 400

Entering these values into the formula or calculator above gives us:

Enet = 400 – 300 = 100 (J)