Kinetic Energy from Momentum Calculator
🎱 Momentum & collisions. Use the Kinetic energy from momentum formula to find kinetic energy, momentum, mass: pick the value you want, type the others, and the answer updates as you go.
Kinetic energy100 J
Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.
What each letter means
| Quantity | Unit |
|---|---|
| Kinetic energy | J |
| Momentum | kg m/s |
| Mass | kg |
Worked example
Find the kinetic energy when Momentum = 20 kg m/s, Mass = 2 kg.
Using Ek = p²/2m: Kinetic energy = 100 J.
Frequently asked questions
What is the formula for Kinetic energy from momentum?
Ek = p²/2m.
What do the letters stand for, and what units are used?
Kinetic energy in J, Momentum in kg m/s, Mass in kg.
How do you calculate kinetic energy?
Put the values into Ek = p²/2m. For example, with Momentum = 20 kg m/s, Mass = 2 kg, kinetic energy = 100 J.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (kinetic energy, momentum, mass) and fill in the others: it rearranges the formula for you.
