Need help with Physics? Check out these common questions!

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The discussion focuses on seeking assistance with common physics questions related to one-dimensional motion, vectors, laws of motion, energy concepts, and momentum. The user requests help in preparing for midterms and suggests reputable textbooks like Halliday and Resnick and Irodov for study material. Additionally, the thread encourages participants to address physics doubts and solve questions posed by others. Engaging in this collaborative effort can enhance understanding and support fellow students. Overall, the thread emphasizes the importance of community support in mastering physics concepts.
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Hello Everyone.I'm searching questions that about the motion in one dimention,Vectors & Motion in Two and Three Dimensions,Laws of Motion,Work and Kinetic Energy,Potential Energy,Momentum, Impulse and Collisions because i should study to my midterms... thank you for helping
 
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you can get them in decent texts like Halliday and Resnick, IE Irodov (real tough one) , University Physics etc.
Also PFers have doubts in Physics and some of the questions put up are good ones. So you can solve them too and also help out a few guys here.
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
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