Author Topic: CIE mechanics question  (Read 1095 times)

Offline tmisterr

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CIE mechanics question
« on: January 13, 2010, 04:00:40 pm »
if a = -5120/t^3 where t>or=5 how do find the terminal velocity? I know the equation for velocity will be the integral of that and at terminal velocity the acceleration should be 0, but i cannot solve for t by equating a to 0. any suggestions???????

Offline astarmathsandphysics

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Re: CIE mechanics question
« Reply #1 on: January 13, 2010, 04:44:52 pm »
T will be infinity

Offline astarmathsandphysics

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Re: CIE mechanics question
« Reply #2 on: January 13, 2010, 07:21:02 pm »
v=2560/t^2+c
The rerminal velocity will be c - you need a value for v at any time t to fiond wjat c is.

Offline tmisterr

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Re: CIE mechanics question
« Reply #3 on: January 14, 2010, 04:57:13 pm »
thanks astar, i have the value for c so it worked out if u use lim---->0