Why we should take equation to find the work done we can take other equation ?

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Solution

we use the formula of work done to find the work as
work done = Force * distance
or work = power * time
or work done = change in kinetic energy = 1/2m v^2
or work = change in potential energy = mgh
or work = change in kinetic energy + change in potential energy= 1/2m v^2 + mgh
you can use any of the above equation to find work depending on the given values in the problem.
( Please be specific and ask the question in detail specifying the equation . Please make a fresh request if you have any more doubts.)

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