What is correct about the power formula P = w / T and P = FV A. From P = w / T, as long as we know w and T, we can get the power at any time B. From P = FV, we can only calculate the instantaneous power at a certain time C. From P = FV, we know that the power of a car is directly proportional to its speed D. From P = FV, when the engine power is constant, the traction is inversely proportional to the speed I chose D, but B why not? If the problem is only two words, can you give me an example?

What is correct about the power formula P = w / T and P = FV A. From P = w / T, as long as we know w and T, we can get the power at any time B. From P = FV, we can only calculate the instantaneous power at a certain time C. From P = FV, we know that the power of a car is directly proportional to its speed D. From P = FV, when the engine power is constant, the traction is inversely proportional to the speed I chose D, but B why not? If the problem is only two words, can you give me an example?


You can also find the traction or speed at that time



On the power formula P = FV?
In this formula, P = FV, assuming that a moving object (such as a car) runs at constant power, if f is larger, then V is smaller, but the larger f is, the larger V should be?


When running at constant power, first, V increases and P is constant, so f = P / V decreases. When f decreases, a (acceleration) decreases, and then a = 0, the car moves in a uniform straight line with rated power P



Can you explain to me the formula P = Fv (instantaneous power)
What are f and V in this formula? What is the instantaneous power?


F is the resultant force and V is the instantaneous velocity. The formula can be used as the expression of instantaneous power
The derivation is as follows
When t is very small, V is instantaneous velocity