Enter the total kinetic energy (J) and the velocity (m/s) into the Mass From Kinetic Energy Calculator. The calculator will evaluate and display the Mass.

Mass From Kinetic Energy Formula

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

M = 2*KE / v^2
  • Where M is the Mass From Kinetic Energy (kg)
  • KE is the total kinetic energy (J) 
  • v is the velocity (m/s) 

To calculate the mass from kinetic energy, divide the kinetic energy by the velocity squared, then multiply by 2.

How to Calculate Mass From Kinetic Energy?

The following example problems outline how to calculate Mass From Kinetic Energy.

Example Problem #1:

  1. First, determine the total kinetic energy (J).
    • The total kinetic energy (J) is given as: 2500.
  2. Next, determine the velocity (m/s).
    • The velocity (m/s) is provided as: 30.
  3. Finally, calculate the Mass From Kinetic Energy using the equation above: 

M = 2*KE / v^2

The values given above are inserted into the equation below and the solution is calculated:

M = 2*2500 / 30^2 = 5.55 (kg)

Example Problem #2: 

For this problem, the variables needed are provided below:

total kinetic energy (J) = 6000

velocity (m/s) = 70

This example problem is a test of your knowledge on the subject. Use the calculator above to check your answer. 

M = 2*KE / v^2 = ?