How to get work from kinetic energy?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Using the Work-Energy Theorem, work equals the change in kinetic energy: W = ΔKE = ½m(v₂² - v₁²)
Where:
- m = mass in kilograms
- v₁ = initial velocity
- v₂ = final velocity
Example: A 2kg object accelerates from 3 m/s to 5 m/s: W = ½ × 2 × (5² - 3²) = 1 × (25 - 9) = 16 joules
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