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# unclear physics formula watch

1. There is a formula :

Force = Density * Area * Speed^2

I get how we get from f=ma to:

F=(mv-mu)/t
F=(m(change in velocity))/t
F=(m/t)*(change in velocity)
F=((Density*volume)*(change in velocity))/time
But then from the last listed equation how do we get to
Force = Density * Area * Speed^2
2. (Original post by Revision99)
There is a formula :

Force = Density * Area * Speed^2

I get how we get from f=ma to:

F=(mv-mu)/t
F=(m(change in velocity))/t
F=(m/t)*(change in velocity)
F=((Density*volume)*(change in velocity))/time
But then from the last listed equation how do we get to
Force = Density * Area * Speed^2
Volume = area*length
Change in velocity/time = (length/time)/time=length/time^2

Can you see it from this?
3. (Original post by rayquaza17)
Volume = area*length
Change in velocity/time = (length/time)/time=length/time^2

Can you see it from this?
Yes! Thank you so much!

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