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If you are given time and distance, you can determine power if you know
force.
watts.
energy.
joules.
 8 months ago
 8 months ago
If you are given time and distance, you can determine power if you know force. watts. energy. joules.
 8 months ago
 8 months ago

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theEricBest ResponseYou've already chosen the best response.1
Well, 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?
 8 months ago

theEricBest ResponseYou've already chosen the best response.1
Hint:\[P=\frac{W}{t}\]
 8 months ago

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

theEricBest ResponseYou've already chosen the best response.1
Why do you guess "force"?
 8 months ago

swimlife97Best ResponseYou've already chosen the best response.1
W=F d cos(θ) W is work in Joules; F is force through distance; Cos theta is cosine of an angle theta
 8 months ago

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

theEricBest 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!
 8 months ago

theEricBest ResponseYou've already chosen the best response.1
And congrats, because you did it! I just posted equations, haha.
 8 months ago
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