Calculating Kinetic Energy with P=1/2Aρv3

AI Thread Summary
The formula P = 1/2 Aρv^3 is used to calculate power, where P is indeed in watts. The variables represent area (A in m²), density (ρ in kg/m³), and velocity (v in m/s). A participant confirmed that using metric units is essential for accurate calculations. The original poster, Rick, initially used non-metric units but acknowledged the need to convert them. Ensuring proper unit conversion is crucial for correct kinetic energy calculations.
rickeeee
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Hi Everyone,
This is a real simple question, but I should make sure I have this right. In the following formula, is the value of P in watts?

P = 1/2 Aρv3

I'm assuming that this is in watts, but you know what they say about assuming. Thanks in advance for your help!
Cheers,
Rick
 
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Assuming ρ is in [kg/m3] and v is in [m/s] and A is in [m2], then yes P is in watts.
 
Hello MrMatt,
Thank you very much, I was using Slugs for ρ and A was equal to FT2, but I can convert them to metrics. Glad I double checked!
Cheers,
Rick
 

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