How many, if any, factors are necessary to determine power?

1.) Force exerted.
2.) Distance the force moves.
3.) Time required to do the work.

Question

How many, if any, factors are necessary to determine power?

1.) Force exerted. 
2.) Distance the force moves. 
3.)  Time required to do the work.

BlackTom AI · Accepted Answer

The question asks about how many factors, if any, are necessary to determine power, and it presents three items labeled 1) Force exerted, 2) Distance the force moves, and 3) Time required to do the work.

Option 1: Force exerted. If you only know the force, you do not yet know how much work is done or how long it takes to do it. Power depends on how fast work is done, so force alone is not enough information to determine power.

Option 2: Distance the force moves. Knowing distance tells you something about potential work but, by itself, does not tell you how much energy is transferred (since you also need the magnitude of the force) or how quickly that energy transfer occurs (which depends on time). So distance alone is insufficient to determine power.

Option 3: Time required to do the work. Time is essential for calculating power (Power = Work / Time). However, without knowing how much work is being performed (which depends on force and distance), you cannot compute the actual power value. Time alone is not enough.

To determine power, you typically need two pieces of information: the amount of work (which itself depends on force and distance) and the time over which that work is done. In practice, that means you need time plus enough information to determine the work (often force and/or distance). If you only have a single one of the three factors listed, you cannot uniquely determine power. If you have all three factors listed together, you can compute power, since you can derive work from force and distance and then divide by time; but strictly speaking, the essential requirement is time and enough information to determine work, which implies at least two of the three factors.

Keep in mind that the phrase 'how many factors are necessary' can be interpreted in different ways: some interpretations count the minimal set needed (two pieces of independent information), while others consider the direct inclusion of all three factors as a complete description. The key conceptual point is that power depends on the rate of doing work, so time is essential, and work depends on force and distance, so those elements are the contributing factors to determine power.

AMT&111 36402 Physics for Aviation

How many, if any, factors are necessary to determine power? 1.) Force exerted. 2.) Distance the force moves. 3.) Time required to do the work.

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Work and power help us understand how force is applied across distance and how quickly that work is done over time (T or F)

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