Kinetic Energy Calculator
Calculate kinetic energy, mass, or velocity using the kinetic energy formula KE = ½mv². Enter any two values to find the third.
How to Use the Kinetic Energy Calculator
- Enter the known physical values in the corresponding fields.
- Select the appropriate units if multiple options are available.
- The unknown value is computed instantly from the formula.
- Review the result and the formula explanation below.
Referência Rápida
| De | Para |
|---|---|
| m=1 kg, v=10 m/s | 50 J |
| m=2 kg, v=5 m/s | 25 J |
| m=70 kg, v=3 m/s | 315 J |
| m=1000 kg, v=30 m/s | 450,000 J |
| m=0.05 kg, v=400 m/s | 4,000 J |
| m=5 kg, v=20 m/s | 1,000 J |
Casos de Uso
- •Solving physics homework or exam problems with the correct formula.
- •Verifying experimental measurements and calculations in the lab.
- •Understanding physical relationships between quantities.
- •Quick engineering calculations for design or estimation.
Fórmula
KE = ½mv². Mass: m = 2KE / v². Velocity: v = √(2KE / m). Where KE is kinetic energy in joules.
Perguntas Frequentes
What is kinetic energy?
Kinetic energy is the energy an object has due to its motion. It equals one-half times mass times velocity squared: KE = ½mv².
Why is velocity squared in the formula?
Doubling the speed quadruples the kinetic energy. This is why high-speed collisions are so much more destructive.
What units are used?
Mass in kilograms (kg), velocity in meters per second (m/s), and kinetic energy in joules (J).
Can kinetic energy be negative?
No. Mass and the square of velocity are always non-negative, so kinetic energy is always zero or positive.