![]() ![]() ![]() Then if a given work is done in a given time, we say that one has power i.e work done in a given time. But before the task to be done, one must have energy. In real life, we always use the term work. * describe strain and work done in deforming materials * identify the difference between potential energy and kinetic energy * explain how gravitational potential energy. Best Physics Tuition holds informative and engaging classes dedicated to helping students excel in O Level and A Level physics.* state the formulae of work, energy and power. ![]() If you need any assistance or want to broaden your understanding of the subject, you can engage a reputable physics tuition teacher. Knowing how to calculate these measurements in different situations will help immensely in your physics journey, as well as your exams. The concepts of work and power are crucial in the field of physics. Formula: Power = Force (N) x Velocity in the direction of the force (m/s).Since Work done / Time taken = Power, and Displacement / Time taken = Velocity, we can simplify the formula to: Work done / Time taken = Force x (Displacement / Time taken) After doing so, the equation we are left with is: This equation is derived by simply dividing both sides of the equation for work done by the time taken. Power can also be defined in terms of force and velocity. Formula: Power = Work done (J) / Time taken (s).Power is mathematically defined as the work done divided by the time taken. This would, in turn, allow the car to travel faster. ![]() More ‘powerful’ engines would be able to convert the chemical energy in fuel to heat and mechanical energy at a fast rate. To visualise this concept, consider car engines. Power is an essential measurement because the rate at which you can convert one form of energy to another is just as important as the raw amount of work done. In other words, it is the work done per unit time. Power describes the rate of energy conversion.
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