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I should be fine to solve the linear ODE, I just don't know where to start with contructing one.
hmm i dunno, this one is too "physics"y for me lol
haha, who else on here does calculus?
Hmm I dunno. There are a bunch of smarty pants online right now though :O Zarkon, Satellite, King George ...
these guys probably get so many tags that they don't even bother.. lol... the joys of a 99 smartscore.
seen such question for the first time, but still i'll give it a try... downward force of gravity =ma = mg (acceleration is due to gravity, so a=g) upward force of drag = ma = m dv/dt (v=velocity) given that mdv/dt = 1/5th of its speed = v/5 mdv/dt = v/5 in itself is a DE, donno how to incorporate mg ...
v=velocity function ..
haha. Well that is a good start, I don't have any idea either of how to incorporate mg
Fnet = mg - v/5
if the question meant that 'both' downward and upward forces together are 1/5th of speed, then m dv/dt -mg = v/5 ...
m*dv/dt = mg-v/5 ???
or that^ i am still unsure..
no I think just the drag is v/5
hmm, I guess I will just go with one and see what I get.. :) thanks guys!