What is the equation for calculating change in momentum in physics?

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The equation for calculating change in momentum in physics is given by dp/dt = F = m(dv/dt) = ma, where p represents momentum, v is velocity, and a is acceleration. The discussion emphasizes the importance of posting homework questions in the appropriate Homework Help forum rather than the General Physics forum. The conversation highlights a request for assistance with physics concepts, specifically regarding momentum. The exchange also notes a celebratory milestone for a user. Proper forum etiquette is encouraged for future inquiries.
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I need some extra help on physics, what is the equation I would use for the change in momentum it would help a lot. Thanks Rob
 
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you could use:

\frac{dp}{dt} = F =m\frac{dv}{dt} = ma

where p = momentum, v = velocity, and a = acceleration.

edit: w00t 100th post
 
Debbie,

Please post your homework questions in here, in the Homework Help forum -- not in the General Physics forum.

- Warren
 
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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