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

Work From Kinetic Energy Formula

The following formula is used to calculate the Work From Kinetic Energy. 

W = ΔKE = KEf – KEi

  • Where W is the Work From Kinetic Energy (Joules)
  • KEi is the initial kinetic energy (J) 
  • KEf is the final kinetic energy (J) 

How to Calculate Work From Kinetic Energy?

The following two example problems outline how to calculate the Work From Kinetic Energy.

Example Problem #1:

  1. First, determine the initial kinetic energy (J). In this example, the initial kinetic energy (J) is given as 50.
  2. Next, determine the final kinetic energy (J). For this problem, the final kinetic energy (J) is given as 100.
  3. Finally, calculate the Work From Kinetic Energy using the equation above: 

W = ΔKE = KEf – KEi

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

W = ΔKE = 100-50 = 50 (Joules)

Example Problem #2: 

Using the same process as above, first define the variables required by the formula. In this case, these values are:

initial kinetic energy (J) = 25

final kinetic energy (J) = 150

Entering these values yields:

W = ΔKE = 150 -25 = 125 (Joules)