Kinetic Energy Calculator
Calculate the kinetic energy of an object based on its mass and velocity.
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Table of Contents
Kinetic Energy Formula
Kinetic energy is the energy possessed by an object due to its motion. The formula for kinetic energy is:
Where:
- KE = Kinetic Energy (in joules)
- m = Mass (in kilograms)
- v = Velocity (in meters per second)
How to Calculate
To calculate kinetic energy, follow these steps:
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1Measure or determine the mass of the object in kilograms
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2Measure or determine the velocity of the object in meters per second
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3Square the velocity (multiply it by itself)
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4Multiply the mass by the squared velocity
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5Divide the result by 2 to get the kinetic energy in joules
Practical Examples
Example 1 Moving Car
A car with a mass of 1000 kg is moving at a velocity of 20 m/s. Calculate its kinetic energy.
KE = 1/2 × 1000 kg × (20 m/s)²
KE = 1/2 × 1000 × 400
KE = 200,000 J
Example 2 Running Person
A person with a mass of 70 kg is running at a velocity of 5 m/s. Calculate their kinetic energy.
KE = 1/2 × 70 kg × (5 m/s)²
KE = 1/2 × 70 × 25
KE = 875 J
Example 3 Baseball
A baseball with a mass of 0.145 kg is thrown at a velocity of 40 m/s. Calculate its kinetic energy.
KE = 1/2 × 0.145 kg × (40 m/s)²
KE = 1/2 × 0.145 × 1600
KE = 116 J