In: Physics
When t = 0, the position of a point is s= 6m, and its velocity is v= 2m/s. From t = 0 to t= 6s, the acceleration of the point is a = 2+ 2t2 m/s2 .From t = 6s until it comes to rest, its acceleration is a = -4m/s2
a.) What is the total time of travel?
b.) What total distance does the point move?
From time 
 to 
 , acceleration of point is 

Integraging above equation ,








By the time 
 the point is at  
Now at time 
 , the point starts with velocity 
 and an acceleration 
 , finally comes to rest 
 in a time 
Using 


Using 

a) Total time of travel is 
b) Total distance the point moved is