Recent content by ZJacob

Thank you.

The slope of a straight line is: ## \frac{\Delta f}{\Delta x} ##. Also ##\frac{ΔE}{Δt}## represent the rate of change of the energy. Which can also be written as: ## \frac{dE}{dt} ##. So, I'm allowed to past from ## \Delta E_{m}## to ## dE_{m} ##. Correct? Why? It would be wrong if I wrote: The...

* The energy dissipated per unit of time is not changing after the velocity has stabilized since: ## \Delta E_{m} = mg\alpha v ##. * If I were to graph the energy dissipated, the graph would look like this: * ## \frac{dE}{dt} ## is the slope. Q: Could you please answer my first question...

Anyone? :smile:

A cyclist is driving along an on an inclined plan with an angle of ## \alpha = 0,04 ##. His mass (including the bike and his stuff) is ## 75 Kg ##. His speed at an altitude of ## 1200 m ## (1) is ## 50 Km/h ## and after some minutes, he pasts by an altitude of ## 950 m ## (2) with a speed of...