How to calculate , acceleration, force, momentum and impulse?

AI Thread Summary
Calculating acceleration, force, momentum, and impulse involves specific formulas: velocity is determined by distance over time, acceleration is the change in velocity over change in time, force is mass times acceleration, momentum is mass times velocity, and impulse is average force multiplied by time. The discussion highlights frustrations with the physics course's explanations and suggests using online resources like HyperPhysics for clarification. While some participants provide basic formulas, others emphasize the importance of independent study and seeking help for specific questions. Overall, the conversation underscores the need for clear understanding and proper resources in physics education.
libertylovescie
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How to calculate , acceleration, force, momentum and impulse?

I'm supposed to be able to calculate all of these things: velocity, acceleration, force, momentum and impulse. However, the physics course I'm taking explains it horribly!
I think the formulas are: distance over time= velocity, change in velocity over change in time= accleration, but i don't know if those are right and can't find the ones for force, momentum and implse. Please help!
 
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And for those of you who need these formulas too: force is mass times acceleration. I think. You should check that.
 
And :The formula for force: force= mass x acceleration
The formula for momentum: momentum= mass x velocity
The formula for impulse: average force x time
 
libertylovescie, we appreciate your exhuberance, but please refrain from posting the basic information. Most of us already know this material.

Please study it off-line and ask questions when something is not clear.
 


That information was useful to me lol
 
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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