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Physics
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Theo
  • Member for 2 years
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Show that $dE/dt = -bv^2$ (Help with differentiation)
That's so obvious now that you've said it! Thanks!
comment
Show that $dE/dt = -bv^2$ (Help with differentiation)
I thought the chain rule was used to differentiate composite functions, what is composite about a 1/2kx^2 ?
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 Editor
revised
Show that $dE/dt = -bv^2$ (Help with differentiation)
added 45 characters in body
asked
Show that $dE/dt = -bv^2$ (Help with differentiation)
comment
How is momentum conserved when dealing with viscous substances?
Definitely, as the ball bounces back. In this example, there is no upwards motion, and thus no upwards momentum. How is it conserved?
asked
How is momentum conserved when dealing with viscous substances?
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How can there be a change in momentum with no appearent external force?
Thanks for the help. I now realise I had it mixed up- I thought momentum was a change in force when in fact, force is a change in momentum.
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 Scholar
accepted
How can there be a change in momentum with no appearent external force?
asked
How can there be a change in momentum with no appearent external force?