A particle undergoes a constant acceleration of 3.05m/s2. After a certain amount of time, its velocity is 12.6m/s. (Where applicable, indicate the direction with the sign of your answer.) a)t>4.14s and the particle is moving in the positive direction.
b) t<4.14s and the particle is moving in the negative direction.
c) t>4.14s and the particle is moving in the negative direction.
d) t<4.14s and the particle is moving in the positive direction.