Endless Facts, One Snippet at a Time
Power in Physics: The Speed of Doing Work
- Power Defined β In physics, power is how quickly work is done or energy is transferred.
- Formula for Power β Power equals work divided by time: π=π/π‘.
- Watts Measure It β Power is measured in watts, with one watt equal to one joule of work per second.
- Everyday Example β A fast sprinter uses more power than a slow jogger, even if both cover the same distance.
- Engines at Work β A powerful car engine does the same work faster, delivering more acceleration.
- Lightbulb Lesson β A 100-watt bulb uses energy twice as quickly as a 50-watt bulb.
- Human Muscles β Lifting weights quickly requires more power than lifting them slowly.
- Efficiency Factor β Machines that waste less energy as heat can deliver more useful power.
- Big Picture β Power shows not just the amount of energy used, but the rate of energy flow.
- From Homes to Space β Whether itβs charging your phone or launching rockets, power drives every modern system.