Environmental Applications of Newton's Third Law

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SUMMARY

The discussion focuses on the environmental applications of Newton's Third Law, emphasizing the principle that for every action, there is an equal and opposite reaction. Participants clarify that when net force (fnet) equals zero, an object maintains constant velocity, which can be zero if at rest. The conversation highlights practical applications such as propulsion systems in helicopters that utilize this law to effectively drop water or chemicals for forest fire suppression. Additionally, the discussion touches on the importance of understanding Newton's laws in structural engineering to ensure stability and safety.

PREREQUISITES
  • Understanding of Newton's Laws of Motion
  • Basic knowledge of physics concepts such as force, velocity, and acceleration
  • Familiarity with the concept of net force and equilibrium
  • Awareness of environmental science principles related to technology and engineering
NEXT STEPS
  • Research the applications of Newton's Third Law in propulsion systems, specifically in firefighting technologies.
  • Explore structural engineering principles that ensure stability based on Newton's Laws.
  • Investigate the role of Newton's Laws in environmental engineering and sustainable design.
  • Learn about the practical implications of Newton's First and Second Laws in everyday technologies.
USEFUL FOR

This discussion is beneficial for physics students, environmental engineers, and professionals in technology sectors focused on applying Newton's Laws to real-world problems, particularly in environmental and structural contexts.

babuloseo
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Ah hi there, I would just like to know the environmental applications of Newton's third law?

Also fnet= 0; how does an object have constant velocity, is it 0? that's why its constant since its acceleration is 0??

please, I am new.. to physics.. and this forumz.
 
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Welcome :].Acceleration is the first time derivative of velocity, so you can say that:

a = 0
dv/dt = 0

Integrating this would get you that:

v = c Velocity is some constant value. Could also be zero if at rest.

So when you have that acceleration is zero, you can either have constant velocity or an object at rest.
 
thepatient said:
Welcome :].


Acceleration is the first time derivative of velocity, so you can say that:

a = 0
dv/dt = 0

Integrating this would get you that:

v = c Velocity is some constant value. Could also be zero if at rest.

So when you have that acceleration is zero, you can either have constant velocity or an object at rest.
Oh thanks, that makes me eased up at the concept, now I can finish my homework with no head ache :)

But I still need to know the environmental applications of Newtons Laws, can't think and its 1am.. any further help will be appreciated :)
 
Another way you can see it is that acceleration is the change in velocity over a certain period of time. If you have that your velocity is zero at time one, and zero velocity at time two, then the change in velocity is zero, or acceleration is zero.

a = ∆v/∆t = (vf - vi)/(tf - ti) = (0-0)/(t2 -t1) = 0
 
Structures of course. You want net forces to equal zero on any structure in order to not accelerate on their own. XD
 
Yeah, that's for the second law of Newtons >.<, and maybe the first one.. But what about the third.. I only keep thinking of propulsion systems.. how does helicopteres throw water down or whatever chemicals to help stop forest fires?

I need to know the technological, environmental, social (got it already) applications of Newtons first,second, and third law (finished third law).
 
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