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I don't get why ##F \cdot dr = \frac{mv^2}{2}##
I know this has to be really easy but don't see it.
Thanks.
No it is not. ##\vec v^2 = \vec v \cdot \vec v = v^2##.I see what you mean but that is the vector and not the magnitude
Could you tell me the book's name?View attachment 240807
View attachment 240808
I don't get why ##F \cdot dr = \frac{mv^2}{2}##
I know this has to be really easy but don't see it.
Thanks.
SureCould you tell me the book's name?