What Is the Definition of Net Force?

destroying
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Please tell me the definition of NET FORCE
Thanks!:smile:
 
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The vector sum of all the forces acting on a particle.
 
Thanks, atyy!
 

Thread 'Ramjet effect on drone'

I am following someone on Youtube who has built a rocket shaped (4 proprllers) drone for the world speed record ... He was having problems with internal heat from electical control gear and battery inside the sealed rocket (about 1kw waste heat) Speed is 500km/hr , I suggested a 4mm hole in the tip of the nose and 8mm hole at rear which should alow sufficient air cooling .. I said this will increase thrust because the air exiting is hotter .. a bit similar to a ram jet ... was I correct...
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