3. A rose -covered parade float is at x=0 at time t = 0. The float moves in a straight line at 2.0 m/s for the next 5 sec before coming to a stop.After 5 sec, the float moves again at 1.0 m/s in the same direction as before.

a) Sketch the position-time graph for the float from the time t=0until the time t = 15 sec.

b) From your graph determine the position of the float at t = 2 sec and t = 11 sec. (1 points)