Motion In A Straight Line

A particle starts with an initial velocity of \(10.0 \mathrm{~ms}^{-1}\) along \(x\)-direction and accelerates uniformly at the rate of \(2.0 \mathrm{~ms}^{-2}\). The time taken by the particle to reach the velocity of \(60.0 \mathrm{~ms}^{-1}\) is __________.