Answer:
47.91 sec
Step-by-step explanation:
it is given that

at t=0 velocity =0 ( as it is given that it is starting from rest )
we have to find time at which velocity will be 3.3

we know that


integrating both side
---------------eqn 1
at t=o it is given that v=0 putting these value in eqn 1 c=0
so

when v= 3.3

t=

=47.91 sec