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CIE mechanics question

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tmisterr:
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???????

astarmathsandphysics:
T will be infinity

astarmathsandphysics:
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.

tmisterr:
thanks astar, i have the value for c so it worked out if u use lim---->0

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