- #1
OtherWindow
- 9
- 0
Homework Statement
See problem here:
http://i184.photobucket.com/albums/x153/spl10246/problem.png
Solution:
http://i184.photobucket.com/albums/x153/spl10246/solution1.png
http://i184.photobucket.com/albums/x153/spl10246/solution2.png
Homework Equations
p = m * v
K = .5 * m * v^2
U = m * g * h
a = dv/dt
v = dx/dt
The Attempt at a Solution
I've gotten A and C fine, I'm still working to get B. D is the trouble part.
F_net = m * a
Only force acting is -bv
m * a = -bv
m * dv/dt = -bv
dv/dt = -bv / m
dv = -bv/m * dt
dv/v = -b/m * dt
At this point the published solution makes no sense to me at all. I am used to just putting an indefinite integral on both sides at this point. My confusion is about the bounds. Why is the left side v_0 to v?
I understand the steps after setting up the integrals (including evaluating the integrals and using log properties and so on).