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swimlife97
 one year ago
If you are given time and distance, you can determine power if you know
force.
watts.
energy.
joules.
swimlife97
 one year ago
If you are given time and distance, you can determine power if you know force. watts. energy. joules.

This Question is Closed

theEric
 one year ago
Best ResponseYou've already chosen the best response.1Well, watts are the units of power, and joules are the units of energy, and this question isn't going for you knowing units. It wants you to know which physical concept is missing from knowing the power. You're down to "force" or "energy." Do you have a guess and a reason?

theEric
 one year ago
Best ResponseYou've already chosen the best response.1Hint:\[P=\frac{W}{t}\]

theEric
 one year ago
Best ResponseYou've already chosen the best response.1Okay!\[W=F\ d\ cos(\theta)\]Put that in the power equation, if you need another hint.

theEric
 one year ago
Best ResponseYou've already chosen the best response.1Why do you guess "force"?

swimlife97
 one year ago
Best ResponseYou've already chosen the best response.1W=F d cos(θ) W is work in Joules; F is force through distance; Cos theta is cosine of an angle theta

theEric
 one year ago
Best ResponseYou've already chosen the best response.1So, you say the answer is force because, well, you need it. And I agree, you're totally right.

theEric
 one year ago
Best ResponseYou've already chosen the best response.1\[P=\frac{W}{t}=\frac{F\ d\ cos(\theta)}{t}\]so you know distance and time, you just need force. The equations can be telling!

theEric
 one year ago
Best ResponseYou've already chosen the best response.1And congrats, because you did it! I just posted equations, haha.
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