A child operates a remote controlled toy car on a linear track. The figure below plots the car's position as a function of time. x (m) 4 3 2 1 -1 (b) from 2 s to 4 s (c) from 4 s to 6 s 2 (d) from 6 s to 9 s m/s m/s Find the velocity (in m/s) of the toy car over the following time intervals. Indicate the direction with the sign of your answer. (a) from 0 s to 2 s m/s 5 m/s 6 8 9 10 t (s)