Edexcel IGCSE Physics · Spec 4.4-4.5
Work & Power: Using the Equations
Worked examples using the work done and power equations.
Physics revision video
Work & Power: Using the Equations
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Spec 4.4-4.5
What you need to know
- Use work equals force times distance
- Use power equals work over time
- Rearrange both equations
Active recall
Quick check
Answer each question before opening the answer.
How much work is done lifting with a force of 20 N through 3 m?
W = F × d = 20 × 3 = 60 J.
What is the power if 600 J is transferred in 4 s?
P = E ÷ t = 600 ÷ 4 = 150 W.
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