Recent content by ax_xaein

I'm going to read this in just a second, but since you're still up i might as ask you something else heh. Super ball problem, and there's a step where we are supposed to: "We can factor the momentum conversation equation out of the energy conservation equation." Isn't that like saying...

I'm a little confused about step 3. How did you know you were supposed to integrate with repsect to time? Here's what I understood: We obtain the equation representing velocity, integrate and obtain position. Where at during this process do you think of taking an indefinite intergral? (I'm...

It stems from https://www.physicsforums.com/showthread.php?t=211473&highlight=Sunday+night The answer may be earlier in the problem...

I'm having an issue getting two equations to look alike. How can you get: k*v + g = e^(-t*k + k*v0) to look like: v = -g/k + [(k*v0 + g) / k] * e^(-kt) ? ==================================== I know I can split the exponent up, and so I guess the real question is, how do I get...

Yeah, in order for the units to match up i believe k would technically need to have units of 1/t. And yes, a is dv/dt. So instead of writing: a = ..., I've substituted dv/dt = ... This way, we can say dv = blah (partial derivative dt) Integrating both sides, we then obtain the velocity equation.

Sunday night physics problems :( Alright, so I'm supposed to find the displacement equation for a particle fired vertically under a constant gravitational field, where the resisting force is proportional to the instantaneous velocity of the particle. Here's where I'm at: Fup = ma; Fdown =...