2.7.2 AP Calculus Exam .... distance traveled estimate • Physics Forums

karush · 2020-01-29T23:12:30+00:00

https://www.physicsforums.com/attachments/9542 ok all I did was count squares so about 21

Thread 'How does time derivative commute from one variable to another?'

I'm reviewing Meirovitch's "Methods of Analytical Dynamics," and I don't understand the commutation of the derivative from r to dr: $$ \mathbf{F} \cdot d\mathbf{r} = m \ddot{\mathbf{r}} \cdot d\mathbf{r} = m\mathbf{\dot{r}} \cdot d\mathbf{\dot{r}} $$

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MHB 2.7.2 AP Calculus Exam .... distance traveled estimate

Thread 'How does time derivative commute from one variable to another?'

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