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This site is a good reference for all things calculus: https://tutorial.math.lamar.edu/classes/de/de.aspx

The quantity it represents is important, but not necessarily expressed in terms of the spatial velocity ##v##. Indeed...

You've gotten some good advice. I'll highlight what I think is important, and also throw in my two cents. * There is no one...

I use it mainly for the same reason @weirdoguy stated. It's a pain to keep writing the square root down, and not using it makes the...

You need to learn how to learn. For each person, it's different, so asking exactly what steps you have to take is misguided. Assess if...

I did it in my head, so I used a simpler method that is more intuitive to me. ##60 \frac{km}{hr} = 1 \frac{km}{min}## So 1000m in a...

As is stated in the wiki page you cited, rote learning is useful for certain foundational concepts. In arithmetic, it's crucial to know...

Welcome to PF. That's a trick question. If you release a marble from a geostationary satellite, it just continues in the same orbit as...

Using Mathematica, I expanded ##j_1(x) - \tfrac{x^2}{10}(j_1(x)+j_3(x))## in a series and plotted the result keeping only the first...

Can you point out specific instances where you think he doesn't understand physics? In what little I've seen of him discussing topics in...

You've moved the goal posts by adopting an idiosyncratic definition of the "box". In reality, the box is simply the body of all the...