A particle moves in a straight line with a constant acceleration of 1.71 m/s 2 for 6s, zero acceleration for the next 5s, and a constant decceleration of 1.31 m/s 2 for 4s. Knowing that the particle...

A particle moves in a straight line with a constant acceleration of 1.71 m/s2for 6s, zero acceleration for the next 5s, and a constant decceleration of 1.31 m/s2for 4s. Knowing that the particle starts from the origin and that its velocity is 19.9 m/s during the zero acceleration time interval . Determine the velocity (m/s) of the particle at t = 3 seconds. Round off only on the final answer expressed in three decimal places.