Question

If a trolley starts from rest with an acceleration of 3s-2 then the velocity of the trolley after 3 seconds will be

Answer 1

given
$u = 0 \\ a = 3 {s}^{ - 2} \\ t = 3s$
usung eq v=u+ at
$v = u + at \\ v = 0 + 3 \times 3$
$v = 9 {m}^{ - 1}$