Solve Q8. (b) part.

Q8. A car accelerates from rest with 2 ms^-2 for 2 s and then decelerates constantly with 4 ms^-2 for t₀  second to come to rest. The graph tor the motion is shown in Fig. 2.38. 
               
                                                 
                                                                 Fig. 2.38  
a. Find the maximum speed attained by the car. 
h Find the value of t₀.