Work is done when a force moves an object in the direction of the force.
Key points
- Work = Force × Distance (W = Fd)
- Power = Work / Time (P = W/t)
- Energy is conserved, never created or destroyed
💡
WAEC tip
Units matter: Work in Joules, Power in Watts. WAEC deducts for wrong units.
Practise this
A 60 kg student climbs 3 m in 5 seconds. Calculate the work done and her power output. (g = 10 m/s²)
AI Q&A coming in Premium. Your personal tutor will check your answer.