# Instantaneous Power (Mastering Physics)

by ren0x
Tags: instantaneous, mastering, physics, power
 P: 2 1. The problem statement, all variables and given/known data Let us now consider several questions that include numeric data. A sled is being pulled along a horizontal surface by a horizontal force F of magnitude 600 N. Starting from rest, the sled speeds up with acceleration 0.08 m/s2 for 1 minute. Find the instantaneous power P created by force F at t=10s. Express your answer in watts to three significant figures. 2. Relevant equations Pavg = $$\frac{\Delta W}{\Delta t}$$ P = $$\frac{dW}{dt}$$ 3. The attempt at a solution I have solved for velocity after 10s. v = 0.8 m/s I'm stuck at where to go from here.
 P: 159 Do not forget that Power can also be expressed as P = Fv
P: 2
 Quote by Mattowander Do not forget that Power can also be expressed as P = Fv
If I'm not mistaken, that is the formula for Pavg. I am trying to solve for the instantaneous power, unless you know something I don't.

P: 159

## Instantaneous Power (Mastering Physics)

I believe that the equation would hold if you used the instantaneous force and the instantaneous velocity ( which you already found ).

That is what I found here : http://www.physicsforums.com/showthread.php?t=228937

Hope that helps.

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