Posted by karan on .
A particle moves in a straight line with an acceleration a ms^2 at time 't' seconds where a =  1/tÂ² when t=1 the particle has a velocity of 3ms^1 then find the velocity when t=4

physics 
Damon,
dv/dt = 1/t^2
v = (1/t) + c
3 = 1 + c
c = 2
v = (1/t) + 2
if t = 4
v = 2.25